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1. Commit original paper tape images B220_Paper_Tapes.zip and TR1101_TR1301.zip archives from http://bitsavers.org/bits/Burroughs/B220/. 2. Update and reorganize software/Diagnostics folder; Add README.txt. 3. Commit Michael Mahon's consolidation of the TR1202..TR1206 tests as Mahon-Regression-Test.pt. 4. Correct formatting of "*" (current assembler location) operand in BAC-Disassembler.html. 5. Minor corrections to 220-Paper-Tape-Decoder.html. 6. Commit new 220-Format-Band-Disassembler.html script to generate BAC- Assembler FBGR pseudo ops from memory images of Cardatron format bands.
Index of folder retro-220/software/Diagnostics:
Diagnostic programs for the retro-220 emulator.
TR1101_TR1301/
Files for the Burroughs TR1101 System Maintenance Test and TR1301
Magnetic Tape Performance Test. These were obtained from an eBay
sale in September 2020 by Al Kossow of bitsavers.org with financial
assistance from Loren Wilton and Paul Kimpel. These are diagnostic
programs on paper tape -- just the object code, with nothing but
very sketchy notes for documentation.
The original paper tape image files were converted to the format
(.pt) required by the retro-220 emulator. Those converted files were
then disassembled into an assembler-like listing by the software/
tools/BAC-Disassembler.html program in this project.
These programs are very difficult to understand and get running,
although TR1101 has revealed some emulator bugs that have since been
fixed. TR1101 mostly runs -- if you set its very obscure parameters
properly -- but there are still problems in the magnetic tape and
Cardatron areas. TR1301 is still in a largely unexplored state.
See http://bitsavers.org/bits/Burroughs/B220/ for the original paper
tape image files.
TR1202-TR1206/
A collection of five Burroughs diagnostic programs:
TR1202 Memory Test
Runs about 6m40s on a 5000-word system. Halts with
9999 00 aaaa in C, where aaaa is the memory size - 101.
TR1203 Operations Test
Runs 100 iterations in about 100s, printing the
iteration counter at the end of each set of 100.
Runs until you stop it.
TR1204 Arithmetic Test
Runs about 2m35s; halts with 9999 00 9999 in C.
TR1205 Floating-Point Test
Runs about 4m35s; halts with 9999 00 9999 in C.
TR1206 Field Select Test
Runs about 2m54s; halts with 9999 00 9999 in C.
TR1202 requires the system memory size to be pre-stored in word 0000
of the 220 memory. See Memory_Test_MemSize.pt for a loadable paper
tape program that can be prefixed to the TR1202 tape to accomplish
this. An alternative is to store the memory size using the console
keyboard.
The other programs require no special preparation. The .pt
files for these tests are configured to load from paper tape reader
#1. The times above assume the reader is set to the HI speed.
Mahon-Regression-Test.pt
A consolidation of TR1203, TR1204, TR1205, and TR1206 into a single
program that runs only one iteration of each of the five tests.
Developed by Michael Mahon and included here with his permissions.
Load from paper tape reader #1. It requires no other setup. In the
retro-220 emulator, this test completes in about 95 seconds with the
paper tape reader set to the HI speed.
Paul Kimpel
September 2021