Merged gh-pages README updates
This commit is contained in:
Jeff
Jeff Parsons
parent
a88e2d7b39
commit
f1ee9d7331
8 changed files with 118 additions and 95 deletions
|
|
@ -19,6 +19,7 @@ PCjs also includes a small collection of disk images in the [Disk Libraries](/di
|
|||
|
||||
* [IBM PC](/disks/pcx86/)
|
||||
* [Challenger 1P](/disks/c1p/)
|
||||
* [DEC](/disks/dec/)
|
||||
|
||||
---
|
||||
|
||||
|
|
|
|||
|
|
@ -10,85 +10,3 @@ machines:
|
|||
{% include machine.html id="test1170" %}
|
||||
|
||||
This machine is also available with our built-in [Debugger](debugger/).
|
||||
|
||||
Front Panel Basics
|
||||
------------------
|
||||
|
||||
From the [PDP-11/70 Handbook (1979)](http://archive.pcjs.org/pubs/dec/pdp11/1170/PDP1170_Handbook_1979.pdf), Chapter 10,
|
||||
p. 325:
|
||||
|
||||
> ### CONSOLE OPERATION
|
||||
|
||||
> The PDP-11/70 console allows direct control of the computer system. It contains a power switch for the CPU,
|
||||
which is also usually used as the Master Switch for the system. The console is used for starting, stopping, resetting,
|
||||
and debugging. Lights and switches provide the facilities for monitoring operation, system control, and maintenance.
|
||||
Debugging and detailed tracing of operations can be accomplished by having the computer execute single instructions or
|
||||
single cycles. Contents of all locations can be examined, and data can be entered manually from the console switches.
|
||||
|
||||
The PDPjs Front Panel replicates most (but not all) the features of a real PDP-11/70 Console. The switches, which
|
||||
PDPjs displays as green to make them stand out from the rest of the traditional pink-and-magenta controls, are summarized
|
||||
below.
|
||||
|
||||
### 0..21
|
||||
|
||||
Switches 0 to 21 control bits 0 to 21 of the SWITCH register. The UP position represents a 1, and the DOWN position
|
||||
represents a 0. Once all the bits have been set, you can choose to load the contents of the SWITCH register into the
|
||||
ADDRESS register (as displayed by the top row of LEDs), or directly into the memory location referenced by the ADDRESS
|
||||
register (where it will become the DATA displayed by the second row of LEDs).
|
||||
|
||||
The SWITCH, ADDRESS, and DATA (aka DISPLAY) registers are all internal to the Front Panel hardware, and should not be
|
||||
confused with CPU registers.
|
||||
|
||||
### TEST
|
||||
|
||||
This is a momentary switch that is normally in the DOWN position. When held in the UP position, it turns on all LEDs.
|
||||
This "lamp test" was more important in the days when the lights were produced by bulbs with filaments that could burn out,
|
||||
and if you didn't realize that a particular light was "burned out", you could mistake it for a zero.
|
||||
|
||||
While the TEST switch is more "cute" than useful on a virtual Front Panel, we have added one "innovation" to the switch:
|
||||
pressing it also returns all the SWITCH register switches (0-21) to their DOWN position.
|
||||
|
||||
### LOAD [ADRS]
|
||||
|
||||
This is a momentary switch that is normally in the UP position. When pressed DOWN, it copies the SWITCH register to the
|
||||
ADDRESS register.
|
||||
|
||||
### EXAM
|
||||
|
||||
This is a momentary switch that is normally in the UP position. When pressed DOWN, it reads the memory location referenced
|
||||
by the ADDRESS register and displays it in the DATA register. If pressed repeatedly, each repetition also automatically
|
||||
adds 2 to the ADDRESS register, making it easier to examine a series of words. Note that if the CPU registers are being
|
||||
examined (starting at address 177700), the ADDRESS register will advance by 1 instead of 2.
|
||||
|
||||
Another "innovation" unique to PDPjs: if the STEP switch is toggled from the UP to the DOWN position, repeated EXAM or DEP
|
||||
operations will decrease the ADDRESS register instead of increasing it.
|
||||
|
||||
### DEP
|
||||
|
||||
This is a momentary switch that is normally in the DOWN position. When pressed UP, it writes the contents of the SWITCH
|
||||
register to the memory location referenced by the ADDRESS register, and displays the result in the DATA register. Like the
|
||||
EXAM switch, if DEP is pressed repeatedly, each repetition also automatically adds 2 to the ADDRESS register, making it easier
|
||||
to deposit the same value to a series of words.
|
||||
|
||||
### CONT
|
||||
|
||||
This is a momentary switch that is normally in the UP position. When pressed DOWN, it will start the CPU if it's currently
|
||||
halted. If the CPU is already running, CONT has no effect. Also, if the ENABLE/HALT switch is in the DOWN (HALT) position,
|
||||
then the CPU will continue for only ONE instruction and then stop again.
|
||||
|
||||
### ENABLE/HALT
|
||||
|
||||
This switch is a toggle that is normally in the UP (ENABLE) position. If it pressed DOWN while the CPU is running, the CPU will
|
||||
stop. Once the CPU is stopped, this switch has no effect, other than determining what CONT will do when pressed.
|
||||
|
||||
### STEP
|
||||
|
||||
On a real PDP-11, this would select between cycle-stepping vs. instruction-stepping. Since PDPjs doesn't support cycle-stepping,
|
||||
this switch has no effect (except as described above when the EXAM or DEP switches are pressed repeatedly).
|
||||
|
||||
### START
|
||||
|
||||
The START switch is similar to CONT, but it also performs the equivalent a RESET instruction before starting the CPU, so
|
||||
unless you're starting execution at the beginning of a program, using START instead of CONT to continue execution is probably
|
||||
not a good idea. Also, if the ENABLE/HALT switch is in the DOWN (HALT) position, START will still reset the machine but not
|
||||
execute anything.
|
||||
|
|
|
|||
|
|
@ -19,7 +19,7 @@ Toggle-Ins
|
|||
|
||||
As DEC notes in the [PDP-11/70 Maintenance Service Guide](http://archive.pcjs.org/pubs/dec/pdp11/1170/PDP1170_Maintenance_Service_Guide_Apr88.pdf),
|
||||
Chapter 4: "There are several useful toggle-ins that are probably not very well known." Excerpts are provided below. If you're
|
||||
not sure how to "toggle in" code using a Front Panel, check out [Front Panel Basics](/devices/pdp11/machine/1170/panel/#front-panel-basics).
|
||||
not sure how to "toggle in" code using a Front Panel, check out [Front Panel Basics](/devices/pdp11/panel/1170/#front-panel-basics).
|
||||
|
||||
However, since the above machine also includes the PDPjs Debugger, you'll find that it's much easier to use the Debugger commands
|
||||
described below to load and execute these "toggle-ins".
|
||||
|
|
|
|||
|
|
@ -7,4 +7,90 @@ permalink: /devices/pdp11/panel/1170/
|
|||
PDP-11/70 Control Panels
|
||||
------------------------
|
||||
|
||||
The following Control Panel configurations are available:
|
||||
|
||||
* [PDP-11/70 Front Panel](front.xml) (with [Debugger](debugger/front.xml))
|
||||
|
||||
Use this [PDP-11/70](/devices/pdp11/machine/1170/panel/debugger/) to see the [PDP-11/70 Front Panel](debugger/front.xml) in action.
|
||||
|
||||
Front Panel Basics
|
||||
------------------
|
||||
|
||||
From the [PDP-11/70 Handbook (1979)](http://archive.pcjs.org/pubs/dec/pdp11/1170/PDP1170_Handbook_1979.pdf), Chapter 10,
|
||||
p. 325:
|
||||
|
||||
> ### CONSOLE OPERATION
|
||||
|
||||
> The PDP-11/70 console allows direct control of the computer system. It contains a power switch for the CPU,
|
||||
which is also usually used as the Master Switch for the system. The console is used for starting, stopping, resetting,
|
||||
and debugging. Lights and switches provide the facilities for monitoring operation, system control, and maintenance.
|
||||
Debugging and detailed tracing of operations can be accomplished by having the computer execute single instructions or
|
||||
single cycles. Contents of all locations can be examined, and data can be entered manually from the console switches.
|
||||
|
||||
The PDPjs Front Panel replicates most (but not all) the features of a real PDP-11/70 Console. The switches, which
|
||||
PDPjs displays as green to make them stand out from the rest of the traditional pink-and-magenta controls, are summarized
|
||||
below.
|
||||
|
||||
### 0..21
|
||||
|
||||
Switches 0 to 21 control bits 0 to 21 of the SWITCH register. The UP position represents a 1, and the DOWN position
|
||||
represents a 0. Once all the bits have been set, you can choose to load the contents of the SWITCH register into the
|
||||
ADDRESS register (as displayed by the top row of LEDs), or directly into the memory location referenced by the ADDRESS
|
||||
register (where it will become the DATA displayed by the second row of LEDs).
|
||||
|
||||
The SWITCH, ADDRESS, and DATA (aka DISPLAY) registers are all internal to the Front Panel hardware, and should not be
|
||||
confused with CPU registers.
|
||||
|
||||
### TEST
|
||||
|
||||
This is a momentary switch that is normally in the DOWN position. When held in the UP position, it turns on all LEDs.
|
||||
This "lamp test" was more important in the days when the lights were produced by bulbs with filaments that could burn out,
|
||||
and if you didn't realize that a particular light was "burned out", you could mistake it for a zero.
|
||||
|
||||
While the TEST switch is more "cute" than useful on a virtual Front Panel, we have added one "innovation" to the switch:
|
||||
pressing it also returns all the SWITCH register switches (0-21) to their DOWN position.
|
||||
|
||||
### LOAD [ADRS]
|
||||
|
||||
This is a momentary switch that is normally in the UP position. When pressed DOWN, it copies the SWITCH register to the
|
||||
ADDRESS register.
|
||||
|
||||
### EXAM
|
||||
|
||||
This is a momentary switch that is normally in the UP position. When pressed DOWN, it reads the memory location referenced
|
||||
by the ADDRESS register and displays it in the DATA register. If pressed repeatedly, each repetition also automatically
|
||||
adds 2 to the ADDRESS register, making it easier to examine a series of words. Note that if the CPU registers are being
|
||||
examined (starting at address 177700), the ADDRESS register will advance by 1 instead of 2.
|
||||
|
||||
Another "innovation" unique to PDPjs: if the STEP switch is toggled from the UP to the DOWN position, repeated EXAM or DEP
|
||||
operations will decrease the ADDRESS register instead of increasing it.
|
||||
|
||||
### DEP
|
||||
|
||||
This is a momentary switch that is normally in the DOWN position. When pressed UP, it writes the contents of the SWITCH
|
||||
register to the memory location referenced by the ADDRESS register, and displays the result in the DATA register. Like the
|
||||
EXAM switch, if DEP is pressed repeatedly, each repetition also automatically adds 2 to the ADDRESS register, making it easier
|
||||
to deposit the same value to a series of words.
|
||||
|
||||
### CONT
|
||||
|
||||
This is a momentary switch that is normally in the UP position. When pressed DOWN, it will start the CPU if it's currently
|
||||
halted. If the CPU is already running, CONT has no effect. Also, if the ENABLE/HALT switch is in the DOWN (HALT) position,
|
||||
then the CPU will continue for only ONE instruction and then stop again.
|
||||
|
||||
### ENABLE/HALT
|
||||
|
||||
This switch is a toggle that is normally in the UP (ENABLE) position. If it pressed DOWN while the CPU is running, the CPU will
|
||||
stop. Once the CPU is stopped, this switch has no effect, other than determining what CONT will do when pressed.
|
||||
|
||||
### STEP
|
||||
|
||||
On a real PDP-11, this would select between cycle-stepping vs. instruction-stepping. Since PDPjs doesn't support cycle-stepping,
|
||||
this switch has no effect (except as described above when the EXAM or DEP switches are pressed repeatedly).
|
||||
|
||||
### START
|
||||
|
||||
The START switch is similar to CONT, but it also performs the equivalent a RESET instruction before starting the CPU, so
|
||||
unless you're starting execution at the beginning of a program, using START instead of CONT to continue execution is probably
|
||||
not a good idea. Also, if the ENABLE/HALT switch is in the DOWN (HALT) position, START will still reset the machine but not
|
||||
execute anything.
|
||||
|
|
|
|||
|
|
@ -12,7 +12,7 @@ Machines containing the [RL11 Component](/modules/pdp11/lib/pc11.js) include:
|
|||
- [PDP-11/70 Boot Monitor](/devices/pdp11/machine/1170/monitor/) (with [Debugger](/devices/pdp11/machine/1170/monitor/debugger/))
|
||||
- [PDP-11/70 with Front Panel](/devices/pdp11/machine/1170/panel/) (with [Debugger](/devices/pdp11/machine/1170/panel/debugger/))
|
||||
|
||||
PCjs has archived a selection of [RL02K Disk Images](/disks/dec/rl02k/) for use by those machines, most of which are
|
||||
PCjs has archived a selection of [RL02K Disk Images](/disks/dec/rl02k/) for use by those machines, which are
|
||||
listed in the following RL11 Device XML file:
|
||||
|
||||
- [Default](/devices/pdp11/rl11/default.xml)
|
||||
|
|
@ -25,18 +25,15 @@ Device XML files not only configure a device, but also list all the resource the
|
|||
used to control the device, such as choosing which disks should be "auto-mounted" by the RL11 device. For example:
|
||||
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<device id="pc11" type="pc11" baudReceive="9600" autoMount='{path:"/apps/pdp11/tapes/absloader/DEC-11-L2PC-PO.json"}' pos="left" width="35%" padLeft="8px" padBottom="8px">
|
||||
<name>Paper Tape Controls</name>
|
||||
<device id="rl11" type="rl11" autoMount='{RL3:{path:"http://archive.pcjs.org/disks/dec/rl02k/RL02K-XXDP.json"}}' pos="left" width="35%" padLeft="8px" padBottom="8px">
|
||||
<name>Disk Drive Controls</name>
|
||||
<control type="container">
|
||||
<control type="list" binding="listTapes">
|
||||
<tape id="tape00" name="Bootstrap Loader (16Kb)" path="/apps/pdp11/boot/bootstrap/BOOTSTRAP-16KB.json"/>
|
||||
<tape id="tape01" name="Absolute Loader" path="/apps/pdp11/tapes/absloader/DEC-11-L2PC-PO.json"/>
|
||||
<tape id="tape02" name="BASIC (Single User)" path="/apps/pdp11/tapes/basic/DEC-11-AJPB-PB.json"/>
|
||||
<control type="list" binding="listDrives"/>
|
||||
<control type="list" binding="listDisks">
|
||||
<disk id="rl3" name="XXDP Diagnostics" path="http://archive.pcjs.org/disks/dec/rl02k/RL02K-XXDP.json"/>
|
||||
</control>
|
||||
<control type="button" binding="attachTape">Attach</control>
|
||||
<control type="button" binding="loadTape">Load</control>
|
||||
<control type="description" binding="descTape" padRight="8px"/>
|
||||
<control type="file" binding="mountTape"/>
|
||||
<control type="progress" binding="readProgress" pos="default" width="250px" padTop="8px">Tape Progress</control>
|
||||
<control type="button" binding="loadDrive">Load</control>
|
||||
<control type="description" binding="descDisk" padRight="8px"/>
|
||||
<control type="file" binding="mountDisk"/>
|
||||
</control>
|
||||
</device>
|
||||
|
|
|
|||
|
|
@ -11,6 +11,7 @@ Browse these PCjs Disk Libraries:
|
|||
|
||||
* [IBM PC](pcx86/)
|
||||
* [Challenger 1P](c1p/)
|
||||
* [DEC](dec/)
|
||||
|
||||
Additional selected software is available in the PCjs [Software Archives](/apps/).
|
||||
|
||||
|
|
|
|||
10
disks/dec/README.md
Normal file
10
disks/dec/README.md
Normal file
|
|
@ -0,0 +1,10 @@
|
|||
---
|
||||
layout: page
|
||||
title: DEC Disk Images
|
||||
permalink: /disks/dec/
|
||||
---
|
||||
|
||||
DEC Disk Images
|
||||
---------------
|
||||
|
||||
* [RL02K](rl02k/)
|
||||
10
disks/dec/rl02k/README.md
Normal file
10
disks/dec/rl02k/README.md
Normal file
|
|
@ -0,0 +1,10 @@
|
|||
---
|
||||
layout: page
|
||||
title: DEC RL02K Disk Images
|
||||
permalink: /disks/dec/rl02k/
|
||||
---
|
||||
|
||||
DEC RL02K Disk Images
|
||||
---------------------
|
||||
|
||||
* [XXDP Diagnostics](http://archive.pcjs.org/disks/dec/rl02k/RL02K-XXDP.json)
|
||||
Loading…
Reference in a new issue