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Jeff Parsons 2017-08-23 20:20:17 -07:00 • committed by Jeff Parsons
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2
_posts/2014-08-01-pc-tech-journal-1987.md
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@ -9,7 +9,7 @@ permalink: /blog/2014/08/01/
As part of an ongoing effort to make classic PC technical literature more accessible, I just finished
scanning and posting the 12 issues of [PC Tech Journal](/pubs/pc/magazines/pctj/) from 1987.
![PC Tech Journal, Jan 1987](http://archive.pcjs.org/pubs/pc/magazines/pctj/PCTJ-1987-01/thumbs/PCTJ-1987-01 1.jpeg "link:/pubs/pc/magazines/pctj/PCTJ-1987-01/:200:260")
![PC Tech Journal, Jan 1987](https://s3-us-west-2.amazonaws.com/archive.pcjs.org/pubs/pc/magazines/pctj/PCTJ-1987-01/thumbs/PCTJ-1987-01 1.jpeg "link:/pubs/pc/magazines/pctj/PCTJ-1987-01/:200:260")
Future PC Tech Journal postings will include:

4
_posts/2014-09-13-the-ibm-pc-at-alive-and-booting.md
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@ -25,8 +25,8 @@ Aside from the additional DMA Controller, other major new motherboard components
The Keyboard Controller and Real-Time Clock/CMOS components required the most tinkering to pass through the ROM BIOS
gauntlet.
For example, at one point, the BIOS ("[TEST.21](http://archive.pcjs.org/pubs/pc/reference/ibm/5170/techref/1984-03/pages/IBM-5170-TECHREF 202.pdf)")
reset the keyboard ("[KBD_RESET](http://archive.pcjs.org/pubs/pc/reference/ibm/5170/techref/1984-03/pages/IBM-5170-TECHREF 212.pdf)"),
For example, at one point, the BIOS ("[TEST.21](https://s3-us-west-2.amazonaws.com/archive.pcjs.org/pubs/pc/reference/ibm/5170/techref/1984-03/pages/IBM-5170-TECHREF 202.pdf)")
reset the keyboard ("[KBD_RESET](https://s3-us-west-2.amazonaws.com/archive.pcjs.org/pubs/pc/reference/ibm/5170/techref/1984-03/pages/IBM-5170-TECHREF 212.pdf)"),
which unmasked the keyboard IRQ and waited for an interrupt, using a loop where CX was initialized to zero and then
decremented until either CX wrapped around to zero again *or* an interrupt occurred. The "TEST.21" code then assumed
that if "KBD_RESET" returned zero in CX, no interrupt had occurred.

2
_posts/2015-05-20-pc-tech-journal-collection.md
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@ -18,7 +18,7 @@ however, even though it identifies itself as a 1987 issue, the editorial index o
October 1986, so "technically" it should be considered a late 1986 issue. It is officially Vol. 4, No. 13, which,
numerically, puts it squarely between the December 1986 and January 1987 issues.
[<img src="http://archive.pcjs.org/pubs/pc/magazines/pctj/PCTJ-1983-07/thumbs/PCTJ-1983-07 1.jpeg" width="200" height="260" alt="PC Tech Journal, July-August 1983"/>](/pubs/pc/magazines/pctj/)
[<img src="https://s3-us-west-2.amazonaws.com/archive.pcjs.org/pubs/pc/magazines/pctj/PCTJ-1983-07/thumbs/PCTJ-1983-07 1.jpeg" width="200" height="260" alt="PC Tech Journal, July-August 1983"/>](/pubs/pc/magazines/pctj/)
Happy reading!

2
_posts/2015-07-17-windows-95.md
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@ -10,7 +10,7 @@ machines:
debugger: true
state: /disks/pcx86/windows/win95/4.00.950/deskpro386.json
config: /devices/pcx86/machine/compaq/deskpro386/vga/4096kb/debugger/machine.xml
drives: '[{name:"68Mb Hard Disk",type:4,path:"http://archive.pcjs.org/disks/pcx86/fixed/68mb/win95.json"}]'
drives: '[{name:"68Mb Hard Disk",type:4,path:"https://s3-us-west-2.amazonaws.com/archive.pcjs.org/disks/pcx86/fixed/68mb/win95.json"}]'
autoMount:
A:
name: None

2
_posts/2015-09-21-windows-95-in-your-web-browser.md
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@ -9,7 +9,7 @@ machines:
type: pcx86
state: /disks/pcx86/windows/win95/4.00.950/deskpro386.json
config: /devices/pcx86/machine/compaq/deskpro386/vga/4096kb/machine.xml
drives: '[{name:"68Mb Hard Disk",type:4,path:"http://archive.pcjs.org/disks/pcx86/fixed/68mb/win95.json"}]'
drives: '[{name:"68Mb Hard Disk",type:4,path:"https://s3-us-west-2.amazonaws.com/archive.pcjs.org/disks/pcx86/fixed/68mb/win95.json"}]'
autoMount:
A:
name: None

2
_posts/2016-11-13-curious-pdp-11-features.md
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@ -7,7 +7,7 @@ permalink: /blog/2016/11/13/
Last week, I ran PDPjs through a series of early [PDP-11 Paper Tape Diagnostics](/apps/pdp11/tapes/diags/).
These tests were originally released in 1970 and are documented in such DEC publications as the
[MAINDEC USER REFERENCE MANUAL](http://archive.pcjs.org/pubs/dec/pdp11/diags/MAINDEC-11-DZQAB-B-D_User_Reference_Manual_Oct73.pdf)
[MAINDEC USER REFERENCE MANUAL](https://s3-us-west-2.amazonaws.com/archive.pcjs.org/pubs/dec/pdp11/diags/MAINDEC-11-DZQAB-B-D_User_Reference_Manual_Oct73.pdf)
(October 1973).
[Tests 1-12](/apps/pdp11/tapes/diags/#tests-1-12) (MAINDEC-11-D0AA-PB through MAINDEC-11-D0LA-PB)

2
_posts/2016-12-30-out-with-the-old-in-with-ecmascript-2015.md
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@ -165,7 +165,7 @@ Here's a sample run, from a macOS Terminal window:
License: GPL version 3 or later <http://gnu.org/licenses/gpl.html>
Portions adapted from the PDP-11/70 Emulator v1.4 by Paul Nankervis <paulnank@hotmail.com>
bus: 256Kb RAM at 000000
Net.getResource("http://archive.pcjs.org/disks/dec/rk03/RK03-XXDP.json"): unimplemented
Net.getResource("https://s3-us-west-2.amazonaws.com/archive.pcjs.org/disks/dec/rk03/RK03-XXDP.json"): unimplemented
notice: Unable to load disk "RK03-XXDP" (error -1: RK03-XXDP.json)
Computer object created: test1170.computer
console connected to machine (alt-r for REPL prompt, alt-x to exit)

2
_posts/2017-02-09-pdp-11-front-panel-demo.md
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@ -40,7 +40,7 @@ Give it a try!
### MMU Relocation Test
From DEC's [PDP-11/70 Maintenance Service Guide](http://archive.pcjs.org/pubs/dec/pdp11/1170/PDP1170_Maintenance_Service_Guide_Apr88.pdf),
From DEC's [PDP-11/70 Maintenance Service Guide](https://s3-us-west-2.amazonaws.com/archive.pcjs.org/pubs/dec/pdp11/1170/PDP1170_Maintenance_Service_Guide_Apr88.pdf),
Chapter 4:
Use the following toggle-in to verify the correct operation of Memory Management Relocation.

2
_posts/2017-02-28-learning-the-pdp-10.md
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@ -11,7 +11,7 @@ the [PDP-10](https://en.wikipedia.org/wiki/PDP-10#Cancellation_and_influence).
Having never used a real DEC PDP-10, I've had a steep learning curve creating a [PDP-10 Emulator](/modules/pdp10/).
So far, the only [PDP-10 Hardware Documentation](/pubs/dec/pdp10/) I've read (or rather, skimmed) is the
[PDP-10 System Reference Manual (1968)](http://archive.pcjs.org/pubs/dec/pdp10/ka10/DEC-10-HGAA-D_PDP-10_System_Reference_Manual_May1968.pdf).
[PDP-10 System Reference Manual (1968)](https://s3-us-west-2.amazonaws.com/archive.pcjs.org/pubs/dec/pdp10/ka10/DEC-10-HGAA-D_PDP-10_System_Reference_Manual_May1968.pdf).
To make it easier to create and run some simple [PDP-10 Opcode Tests](/apps/pdp10/tests/opcodes/), most of my initial development
efforts have centered on the built-in PDP-10 Debugger. In addition to the usual disassembler capabilities, I've also included

4
_posts/2017-03-21-the-macro-10-assembler-50-years-later.md
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@ -141,7 +141,7 @@ it's a right-shift. Here are some examples:
>> print -1B70
0o000000000001 1.
And as the [MACRO-10 Assembler Programmer's Reference Manual (June 1972)](http://archive.pcjs.org/pubs/dec/pdp10/tops10/Macro_Assembler_Reference_Manual-Jun72.pdf),
And as the [MACRO-10 Assembler Programmer's Reference Manual (June 1972)](https://s3-us-west-2.amazonaws.com/archive.pcjs.org/pubs/dec/pdp10/tops10/Macro_Assembler_Reference_Manual-Jun72.pdf),
p. 1-17, points out, all of the following "binary shifting" expressions are equivalent:
>> print 10B32
@ -220,7 +220,7 @@ and processing them at the end of the first pass. Well, since ZZ is a symbol th
became clear that I needed to process literals immediately. This meant creating a separate assembly scope while processing each
literal; in fact, it meant a stack of scopes, in case literals contained nested literals.
As the [MACRO-10 Assembler Programmer's Reference Manual (April 1978)](http://archive.pcjs.org/pubs/dec/pdp10/tops10/Macro_Assembler_Reference_Manual-Apr78.pdf)
As the [MACRO-10 Assembler Programmer's Reference Manual (April 1978)](https://s3-us-west-2.amazonaws.com/archive.pcjs.org/pubs/dec/pdp10/tops10/Macro_Assembler_Reference_Manual-Apr78.pdf)
explains:
A literal can include any term, symbol, expression, or statement, but