458 lines
19 KiB
Markdown
458 lines
19 KiB
Markdown
---
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layout: page
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title: IBM PC AT (Model 5170) Machines
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permalink: /devices/pcx86/machine/5170/
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---
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IBM PC AT (Model 5170) Machines
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-------------------------------
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Our IBM PC AT 5170 configurations include:
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* [IBM PC AT with MDA Display](/devices/pcx86/machine/5170/mda/)
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* [IBM PC AT with CGA Display](/devices/pcx86/machine/5170/cga/)
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* [IBM PC AT with EGA Display](/devices/pcx86/machine/5170/ega/)
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* [IBM PC AT with VGA Display](/devices/pcx86/machine/5170/vga/)
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The IBM PC AT 5170 came in a variety of its own models over a three-year period.
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### 5170 Models 68 and 99
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Models 68 and 99 were [introduced](#ibm-pc-at-5170-models-68-and-99-announcement) in August 1984:
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* Model 68
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- Type 1 motherboard
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- 6 MHz CPU
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- 256Kb RAM
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- [Rev 1 BIOS](/devices/pcx86/rom/5170/#ibm-pc-at-rom-bios-rev-1) dated "01/10/84"
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* Model 99
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- All of the above
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- 256Kb additional RAM (total of 512Kb)
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- 20Mb Hard Drive
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- 1 Serial/Parallel Adapter
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### 5170 Model 239
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Model 239 was introduced in October 1985:
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* Model 239
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- Type 2 motherboard
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- 6 MHz CPU
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- 512Kb RAM
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- 30Mb Hard Drive
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- 1 Serial/Parallel Adapter
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- [Rev 2 BIOS](/devices/pcx86/rom/5170/#ibm-pc-at-rom-bios-rev-2) dated "06/10/85"
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### 5170 Models 319 and 339
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Models 319 and 339 were introduced in April 1986:
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* Model 319
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- Type 3 motherboard
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- 8 MHz CPU
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- 512Kb RAM
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- 30MB hard drive
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- 1 Serial/Parallel Adapter
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- [Rev 3 BIOS](/devices/pcx86/rom/5170/#ibm-pc-at-rom-bios-rev-3) dated "11/15/85"
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* Model 339
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- All of the above
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- Enhanced 101-key keyboard
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IBM PC AT 5170 Configuration Options
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---
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The IBM PC AT 5170 doesn't have DIP switches like previous models, but it still has a few switches and jumpers.
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First and foremost, there is a **Display Switch** near the battery connector that must be pushed "toward the
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front of your system unit" if you have a CGA that is your only (or primary) display adapter, or "toward the
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back of your system unit" if you're using an MDA as your only (or primary) display.
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In PCjs, the 5170 **Display Switch** is configured with the <[ChipSet](/pubs/pcx86/chipset/)> *monitor*
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property, which you can set to either "mono" (aka "mda") or "color" (aka "cga"). Unlike the Model 5150/5160 DIP
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switches, there is no UI for this switch, so once the machine has been created, it cannot be changed by the user.
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Also, there is the "keyboard inhibit switch"; it defaults to UNLOCKED and stays UNLOCKED, since no UI or
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configuration property is currently provided.
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Finally, there is a "manufacturing jumper" that can be installed, enabling additional diagnostic functions
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in the ROM; it defaults to UNINSTALLED and stays UNINSTALLED, since no UI or configuration property is currently
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provided.
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The rest of a 5170 machine's configuration is normally handled through CMOS settings, such as the number and type
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of floppy diskette drives, which can be configured with the <[ChipSet](/pubs/pcx86/chipset/)> *floppies* property;
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e.g.:
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```xml
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<chipset id="chipset" model="5170" floppies="[1200,1200]" monitor="color"/>
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```
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The number of elements in the array determines the number of drives, and the value of each element
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determines the type of drive; the value corresponds to the maximum supported diskette size, in Kb:
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+ 360
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+ 720
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+ 1200
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+ 1440
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However, for the 3.5-inch diskette capacities (720 and 1440) to work properly, the machine should also use a
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["Rev 3"](/devices/pcx86/rom/5170/#ibm-pc-at-rom-bios-rev-3) IBM PC AT ROM BIOS and boot with DOS 3.20 or later.
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Like the **Display Switch**, there is no UI for this or any other CMOS setting, so once the machine has been created,
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it cannot be changed by the user.
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---
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IBM PC AT 5170 (Models 68 and 99) Announcement
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---
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The following details come from a [copy](http://www.minuszerodegrees.net/misc/IBM%20PC%20AT%205170%20announcement%20letter.txt)
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of IBM's PC AT Announcement Letter, dated August 14, 1984.
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> The IBM Personal Computer AT is designed for professional
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applications, office environments, and increased personal
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productivity. It includes many advanced technology features
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previously not available in IBM Personal Computers: increased
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performance, advanced microprocessor, high capacity diskette drives,
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high capacity fixed disk drives, large memory capacity, and advanced
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co-processor. The 5170 provides compatibility with existing hardware
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and software products for the IBM Personal Computer family.
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> ### HIGHLIGHTS
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> * Performs more than two times faster than current members of the IBM Personal Computer family
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> * Based on high-performance Intel 80286 microprocessor, compatible with the IBM Personal Computer family
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> * Includes 1.2Mb high-capacity diskette drives
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> * Allows 20Mb fixed disk drives
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> * Contains a standard combination fixed disk and diskette adapter
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> * Provides 512Kb memory capacity on the system board
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> * Offers a combination Serial (Asynchronous)/Parallel (Printer) Adapter
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> * Allows workstation growth with eight I/O expansion slots
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> * Includes an improved keyboard
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> * Includes a clock/calendar with battery backup
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> * Provides improved security capability with a standard keylock
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> ### DESCRIPTION
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> The 5170 system unit/keyboard includes the following standard features:
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> * Advanced high-performance Intel 80286 microprocessor
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> * ROM based automatic power on self test of system components
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> * ROM based BASIC language interpreter
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> * 8086 compatible real address mode
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> * Protected virtual address mode
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> * 256Kb of memory (Model 68)
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> * 512Kb of memory (Model 99)
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> * 1.2Mb high capacity diskette drive
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> * Diskette interface
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> * 20Mb fixed disk drive (Model 99)
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> * Fixed disk interface
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> * Fixed disk-in-use indicator light (red)
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> * Serial/parallel interface (Model 99)
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> * System clock/calendar/system configuration storage with battery back-up
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> * Sound system
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> * Keylock
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> * Bi-directional keyboard interface
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> * Enhanced keyboard
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> * Switchable worldwide power supply
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> * Power-on indicator light (green)
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> * Eight I/O expansion slots
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> * Socket for 80287 math co-processor
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> * 24-bit addressing
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> * 16-bit data path
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> * Seven-channel direct memory access (DMA)
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> * 16-level interrupt
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> * Three programmable timers
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> Based on a high performance 16/24-bit Intel 80286 microprocessor,
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both models of the 5170 are equipped with a high capacity (1.2Mb)
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diskette drive, enhanced keyboard, ROM based BASIC language,
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clock/calendar with battery backup, and keylock. Standard memory on
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Model 68 is 256Kb and on Model 99 is 512Kb. In addition, Model 99 is
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equipped with a 20Mb fixed disk drive and a serial
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(asynchronous)/parallel (printer) adapter. Each system can be further
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expanded through customer setup options. Model 68 memory may be
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expanded to 512Kb by addition of pluggable memory modules on the
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system board. Both models may be further expanded to 640Kb with the
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128Kb memory option or up to 3Mb with 512Kb memory options.
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> Additional direct access storage is available with a 20Mb
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Fixed Disk Drive, a second 1.2Mb High Capacity Diskette Drive, and a
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Dual-sided (320/360Kb) Diskette Drive. A maximum of two diskette
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drives and one fixed disk drive, or one diskette drive and two fixed
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disk drives can be attached to the system unit. These combinations
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result in direct access storage capacity of up to 41.2Mb.
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> DOS 3.0 supports the 20Mb Fixed Disk Drive and 1.2Mb High
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Capacity Diskette Drive in the 5170 system. With DOS 3.0, the 1.2Mb
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diskette drive will also read single- and dual-sided diskettes
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formatted at 160/180Kb and 320/360Kb capacity, respectively. The
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Dual-sided Diskette Drive (320/360Kb) option is available for
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downward diskette portability with other IBM Personal Computer family
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members.
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> The IBM Personal Computer AT is also supported by two other
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operating systems. Personal Computer Interactive Executive (PC/IX)
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Version 1.1 will support the IBM Personal Computer AT in
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compatibility, real address mode. PC/IX will be available in the
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fourth quarter of 1984. The IBM Personal Computer XENIX* will support
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the IBM Personal Computer AT in the 80286 protected address mode. IBM
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Personal Computer XENIX will be available in the first quarter of
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1985.
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> The 5170 contains eight option (feature) slots that support
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feature cards for additional devices, features, or memory. Six of the
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slots support either the advanced 16-bit or 8-bit option cards. Two
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support 8-bit option cards only. However, both models use one 16-bit
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slot for the standard combination fixed disk and diskette drive
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adapter. The Model 99 uses one 8-bit slot for the Serial/Parallel
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Adapter. The result is seven available expansion slots on Model 68
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and six on Model 99.
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> Both models include a world-wide power supply and a
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temperature-controlled variable speed cooling fan that significantly
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reduces acoustical noise in most user environments. Both models also
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include a security keylock, which, when locked by the user, prevents
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removal of the 5170 cover, initialization of the system, and entry of
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command/data from the keyboard.
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> The keyboard is attached to the 5170 via a ten-foot coiled
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cable, permitting a variety of workspace configurations. The enhanced
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84-key keyboard, with an adjustable typing angle, offers commonly
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used data and word processing functions along with separate
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typewriter and numeric keypads. Key-location enhancements and mode
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indicators (Cap Lock, Numeric Lock, Scroll Lock) improve keyboard
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usability. Special symbols may be accessed with a combination of
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keys. Depending on the application program, from 10 to 40 special
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function keys may be supported.
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> Exploring the IBM Personal Computer AT, a program on a
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diskette, is supplied with the 5170. It will familiarize a new
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computer user with the 5170. The program takes 1-1/2 to 2-1/2 hours
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to complete. There are two versions of the program, monochrome and
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color. The program is self-loading from the diskette. It contains
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tutorial information on the keyboard, printer, and disk storage, as
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well as DOS and text editing. It requires a 5170 with a minimum of
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one diskette drive, 256Kb of storage, and one display adapter (either
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monochrome or color).
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> ### OPTIONAL FEATURES
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> #### 256Kb Memory Module Kit (#0202)
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> This option increases the 5170 Model 68 memory from 256Kb to
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512Kb. The kit consists of 18 modules that are plugged into existing
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sockets on the system board. A maximum of one kit may be installed on
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Model 68 only. It is required on the Model 68 for installation
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of #0209 and #0203.
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> #### 512Kb Memory Expansion Option (#0203)
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> This option adds memory above 1Mb, in 512Kb increments. Up to
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five options may be plugged into the I/O expansion slots of the
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system unit to provide a total of three megabytes of primary storage.
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Performance characteristics are the same as other 5170 user memory.
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> The system unit must have at least 512 Kb installed. This option
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requires one 16-bit expansion slot. Note: This option may not be used
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for address storage from 512Kb to 640Kb. The memory range from 640Kb
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to 1Mb is reserved for system functions.
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> #### 128Kb Memory Expansion Option (#0209)
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> This option expands the memory from 512Kb to 640Kb.
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Performance characteristics are the same as other 5170 user memory.
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Only one 128Kb Memory Expansion Option may be installed on a 512Kb
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system unit and it requires a 16-bit expansion slot.
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> #### 20Mb Fixed Disk Drive (#0205)
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> Two optional fixed disk drives may be installed on Model 68 or
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one, as a second fixed disk drive, on Model 99, providing a total of
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40Mb of fixed disk storage capacity. Space and power are provided in
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the system unit for this drive(s). All fixed disk or diskette drives
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use the standard combination fixed disk and diskette drive adapter in
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the system unit. A dedicated landing zone for the read/write heads
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is available to protect the file and its contents during shipping,
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movement, or storage. Increased performance of 40 ms average access
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time is possible from the quasi-closed loop servo positioning system
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utilized in the drive. The number of fixed disk drives and diskette
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drives must not exceed three. No more than two fixed disk drives can
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be installed in a system unit.
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> CHARACTERISTICS:
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> * 20Mb of storage
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> * 512 bytes per sector
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> * 17 sectors per track
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> * 615 tracks per surface (cylinders)
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> * 40 ms average access time
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> * four surfaces
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> * 3573 RPM
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> * 5M bit per second transfer rate
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> * Dimensions:
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> - Height 82.55 mm (3.25 inches)
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> - Width 154.3 mm (6.1 inches)
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> - Depth 203.2 mm (8.0 inches)
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> - Weight 2.9 Kg (6.4 lbs.)
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> #### High Capacity Diskette Drive (#0206)
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> This is a half-high, 5-1/4-inch, dual-sided drive with 1.2Mb
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storage capacity. Space and power have been provided in the system
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unit for up to two drives. The drive is fully self-contained and
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consists of a spindle drive system, a read positioning system and a
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read/write/erase system.
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> One of these drives is standard in both models. An optional
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second drive (#0206) may be installed in the system unit directly
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under the first if the space is not occupied by another disk or
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diskette drive. Both drives use the standard fixed disk and diskette
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drive adapter in the system unit.
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> The drive uses the new 96-TPI, high density media. In
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addition, it will read or write 48-TPI, single- or dual-sided media
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written for the IBM PCjr, IBM Personal Computer, IBM Personal
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Computer XT, and IBM Portable Personal Computer, giving a high level
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of compatibility with existing applications. However, once the
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48-TPI media has been written in this drive, it may only be readable
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on a high capacity diskette drive.
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> CHARACTERISTICS:
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> * 1.2Mb storage
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> * 512 bytes per sector
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> * 15 sectors per track
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> * 96 tracks per inch
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> * Two sides
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> * 80 tracks per side
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> * 360 RPM
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> * Supports 300 and 500 bits/sec data transfer rate
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> * 94 ms average access time in 96-TPI mode
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> * Dimensions:
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> - Height 42.9 mm (1.7 inches)
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> - Width 154.3 mm (6.1 inches)
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> - Depth 203.2 mm (8.0 inches)
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> - Weight: 1.6 Kg (3.5 lbs.)
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> #### Dual-sided Diskette Drive (#0207)
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> This diskette drive permits the exchange of 320/360Kb diskette
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media between the Personal Computer AT, to the IBM Personal Computer,
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the IBM Personal Computer XT, the IBM Portable Personal Computer, and
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the IBM PCjr. It is a half-high, 5-1/4-inch, dual-sided drive with a
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320/360Kb storage capacity. Space and power for one drive have been
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provided in the system unit. The drive is fully self-contained and
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consists of a spindle drive system, a read positioning system, and a
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read/write/erase system.
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> This drive is available for both 5170 models. It is installed
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in the system unit directly under the standard high capacity diskette
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drive if the space is not occupied by another fixed disk or diskette
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drive. This drive uses the standard fixed disk and diskette drive
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adapter in the system unit.
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> CHARACTERISTICS:
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> * 320/360Kb of storage
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> * 512 bytes per sector
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> * 8/9 sectors per track
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> * Two sides
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> * 91 ms average access time
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> * 40 tracks per surface
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> * 48 tracks per inch
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> * 300 RPM
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> * Transfer rate of 250K bits/second
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> * Dimensions:
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> - Height 42.9 mm (1.7 inches)
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> - Width 154.3 mm (6.1 inches)
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> - Depth 203.2 mm (8.0 inches)
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> - Weight: 1.6 Kg (3.5 lbs.)
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> #### Math Co-Processor (#0211)
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> This option is a high performance numeric 80287 processor
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extension with floating point, extended integer, and BCD data types,
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compatible with the Intel 8087 Math Co-Processor. When installed,
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the system fully conforms to the proposed IEEE Floating Point
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Standard and is an excellent facility for high-performance numeric
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processing. Only one 80287 can be installed in a system unit.
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> #### Serial/Parallel Adapter (#0215)
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> This option provides a serial port and a parallel port. It
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occupies only one expansion slot of either type. The serial portion
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is fully programmable and supports asynchronous communications from
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50 to 9600 baud. The back of the adapter has a nine-pin D-shell
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connector that is classified as an RS232-C port. When the optional
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10-foot Serial Adapter Cable (#0217) or 10-inch Serial Adapter
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Connector (#0242) is connected to the adapter, the 25-pin end of the
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cable or connector has all the signals of a standard EIA RS232-C
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interface. The parallel portion of the adapter provides the ability
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to attach various devices that accept eight bits of parallel data.
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The parallel port is provided by a 25-pin, D-shell connector. One or
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two Serial/Parallel Adapters may be installed in either model. Note:
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This adapter does not support current loop operation. The 5218
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Printer is not supported.
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> #### Prototype Adapter (#0220)
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> This adapter is 4.8 inches high by 13.12 inches long and plugs
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into any system unit expansion slot except 1 or 7. Two card edge
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tabs, one 2 by 31 positions and one 2 by 18 positions, provide all
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system control signals and voltages. No components are shipped with
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this card.
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> The adapter contains a voltage bus (+5 Vdc) and a ground bus
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(0 Vdc). Each bus borders the adapter with the ground bus on the
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component side and the voltage bus on on the pin side. A system
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interface (wiring only) is also provided with a space for a jumper to
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specify whether the device has an 8- or a 16-bit data bus. This
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adapter also accommodates a D-shell connector from 9 to 37 positions.
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A recommended system interface logic diagram is available along with
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a list of recommended components to be used to interface custom logic
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to the 5170. Up to five Prototype Adapters can be installed in a
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system unit. Each requires a 16-bit expansion slot.
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> #### Binary Synchronous Communications Adapter (#1204)
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> The BSC Adapter provides an EIA RS232-C interface. It is
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compatible with the IBM Personal Computer, the Portable Personal
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Computer, and the Personal Computer XT. A maximum of two BSC Adapters
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may be installed. Only one BSC Adapter may be installed if an SDLC
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Adapter is installed.
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> #### SDLC Communications Adapter (#1205)
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> The SDLC Communications Adapter provides an EIA RS232-C
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interface. It is compatible with the IBM Personal Computer, the
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Portable Personal Computer, and the Personal Computer XT. Only one
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SDLC Adapter may be installed.
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> #### Floor Standing Enclosure (#0218)
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> This optional enclosure is available to customers who desire
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to remove their system unit from the work surface. With the system
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unit mounted vertically in the floor standing enclosure, only the
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essential parts of the system such as the display and keyboard need
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to be on the work surface. The unit may be positioned left or right
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of the workspace or under the workspace.
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> #### Display Stand (#0216)
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> The display stand is available for the IBM 5151 Monochrome
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Display Model 1 and IBM 5153 Color Display Model 1. It can be placed
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under the display to allow the customer to tilt and/or swivel the
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display for comfortable viewing.
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> ### PUBLICATIONS
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> Each system will be shipped with three manuals:
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> * IBM Personal Computer AT Installation and Setup Manual (#2491)
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> * IBM Personal Computer AT Guide to Operations (#2241)
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> * IBM Personal Computer Basic Reference Manual Version 3.0 (#1132)
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> The following are available for purchase:
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> * IBM Personal Computer AT Technical Reference Manual (#2243)
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> * IBM Personal Computer AT Hardware Maintenance and Service Manual (#2242)
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