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Starting work on disambiguating PCjs the emulator from PCjs the project/website; the emulator will become PCx86

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This commit is contained in:
Jeff Parsons 2016-05-16 20:53:57 -07:00
commit 288f28055d
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26
_posts/2016-02-08-super-bowl-winner-pcjs.md
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@ -6,14 +6,14 @@ permalink: /blog/2016/02/08/
---
The new release of PCjs (v1.20.8) is a fairly minor update, but it's an important one for **FOOTBALL** fans, resolving
two annoying problems with the [OS/2 FOOTBALL Boot Disk](/disks/pc/os2/misc/football/87058/): mysterious hard-error popups
two annoying problems with the [OS/2 FOOTBALL Boot Disk](/disks/pcx86/os2/misc/football/87058/): mysterious hard-error popups
and blank screens.
A hard-error popup would occur when FOOTBALL tried to initialize a non-existent PRN device. To resolve that, PCjs
now provides basic parallel port emulation, in the form of a [ParallelPort](/docs/pcjs/parallel/) component that you
now provides basic parallel port emulation, in the form of a [ParallelPort](/docs/pcx86/parallel/) component that you
include in a machine XML file with the <parallel> element, in much the same way you include the
[SerialPort](/docs/pcjs/serial/) component with the <serial> element. This [Compaq DeskPro 386]
(/devices/pc/machine/compaq/deskpro386/ega/4096kb/debugger/) machine used to run FOOTBALL has now been updated to
[SerialPort](/docs/pcx86/serial/) component with the <serial> element. This [Compaq DeskPro 386]
(/devices/pcx86/machine/compaq/deskpro386/ega/4096kb/debugger/) machine used to run FOOTBALL has now been updated to
include one parallel port.
The other problem was that switching between sessions with the **SysReq** key would often result in a blank screen;
@ -23,21 +23,21 @@ exposed a PCjs memory-management bug. The upshot is that whenever the Video com
buffer (which is *physical* memory), it must tell the CPU to flush any linear-to-physical mappings that may still refer
to the old physical memory.
With these changes, the [OS/2 FOOTBALL Boot Disk](/disks/pc/os2/misc/football/87058/) appears to be quite usable now.
With these changes, the [OS/2 FOOTBALL Boot Disk](/disks/pcx86/os2/misc/football/87058/) appears to be quite usable now.
Feel free to give it a few kicks!
---
I've also tidied up a few things in the [Devices](/devices/) folder. ROM images used to be stored under
`/devices/pc/basic/` and `/devices/pc/bios/`, but BASIC and BIOS ROM images aren't actually devices; they are the
`/devices/pcx86/basic/` and `/devices/pcx86/bios/`, but BASIC and BIOS ROM images aren't actually devices; they are the
*contents* of ROM devices. So, with that in mind, I've made the following rearrangements:
* `/devices/pc/bios/5150/*` => `/devices/pc/rom/5150/*`
* `/devices/pc/bios/5160/*` => `/devices/pc/rom/5160/*`
* `/devices/pc/bios/5170/*` => `/devices/pc/rom/5170/*`
* `/devices/pc/bios/compaq/*` => `/devices/pc/rom/compaq/*`
* `/devices/pc/basic/ibm-basic-1.00.json` => `/devices/pc/rom/5150/basic/BASIC100.json`
* `/devices/pc/basic/ibm-basic-1.10.json` => `/devices/pc/rom/5160/basic/BASIC110.json`
* `/devices/pcx86/bios/5150/*` => `/devices/pcx86/rom/5150/*`
* `/devices/pcx86/bios/5160/*` => `/devices/pcx86/rom/5160/*`
* `/devices/pcx86/bios/5170/*` => `/devices/pcx86/rom/5170/*`
* `/devices/pcx86/bios/compaq/*` => `/devices/pcx86/rom/compaq/*`
* `/devices/pcx86/basic/ibm-basic-1.00.json` => `/devices/pcx86/rom/5150/basic/BASIC100.json`
* `/devices/pcx86/basic/ibm-basic-1.10.json` => `/devices/pcx86/rom/5160/basic/BASIC110.json`
This structure mirrors what was done with Machine and Video devices, where the devices are organized
first by manufacturer (IBM or COMPAQ) and then by type (MDA, CGA, EGA, etc).
@ -48,7 +48,7 @@ for example, models 5150 through 5170 refer to IBM PC models.
---
The project currently includes only two BASIC ROM versions, C1.00 and C1.10, which were initially released with the
first model 5150 and 5160 machines, respectively. For more details, see [IBM PC ROMs](/devices/pc/rom/).
first model 5150 and 5160 machines, respectively. For more details, see [IBM PC ROMs](/devices/pcx86/rom/).
I believe there was also a BASIC ROM version 1.20 released for IBM PCjr, but since PCjs does not yet emulate the PCjr,
it has not been added to the project.