PiDP-8/I SoftwareHistory for examples/pep001.pal
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History for examples/pep001.pal

2018-12-10
10:23
Set 8th bit on the ASCIIZ strings in pep001.pal, in case it's used with a terminal that cares about this, such as an ASR-33. file: [ddf138fe93] check-in: [397c6d8901] user: tangent branch: trunk, size: 7520
10:21
The pep001.pal program could hang in the TSF loop on writing the initial "ANSWER: " leader if the terminal device isn't prepared to receive characters. Added a "TLS" to send a null character to kick things off. This eats up the one remaining word left in PAGE 1! file: [59b284e901] check-in: [15e91ae82b] user: tangent branch: trunk, size: 7516
2017-01-12
06:24
Many more software licenses chased down and added to the appropriate files. Where direct editing was not possible, created license files nearby, and pointed to them from a new COPYING.md file. file: [17ad53a82e] check-in: [fc7e5f2a91] user: tangent branch: trunk, size: 7414
2016-12-07
16:01
Got rid of STMAX as a separate constant, since it suffices to just reuse MAX, with the understanding that MAX < 1024 now, so that the subtotal rollover point is <= 1024. A separate constant makes sense when MAX is much smaller than STMAX, but they're so close now it's pointless have both. file: [9ee369de8b] check-in: [8dea8cc325] user: tangent branch: pep001.pal-stripped-ascii, size: 7212
15:54
Dropped an unnecessary CLL in SAPRT: we aren't rotating bits any more, so we don't care if the link is set. file: [7877b1a5a9] check-in: [15e5c13878] user: tangent branch: pep001.pal-stripped-ascii, size: 7219
15:52
Moved the SANEXT label down an instruction: it was on a redundant instruction with respect to the next iteration of that loop. file: [183bde1ab5] check-in: [9b1e789139] user: tangent branch: pep001.pal-stripped-ascii, size: 7223
15:33
Squeezed two more words from SAPRT by using the PDP-8/E's SWP instruction instead of two RTR's, and using the MQ for storage instead of a named core location for temporary storage. file: [66139430de] check-in: [b1903a5e57] user: tangent branch: pep001.pal-stripped-ascii, size: 7223
2016-12-06
17:12
Rewrote PRINTS in pep001.pal to accept a subset of the "stripped ASCII" encoding produced by the assembler for TEXT directives. It is untested, and so far, it's 8 instructions longer than the ASCIIZ implementation, so I don't want to commit it as the main version even if it does work. I'm saving it as a branch in case it's useful later, and possibly someone will find a way to bum those 8 extra instructions back out. file: [9ea62b0684] check-in: [80fe276c70] user: tangent branch: pep001.pal-stripped-ascii, size: 7115
15:05
Replaced the space at the end of the "ANSWER: " string constant since the previous checkin bought us two instructions at the end of page 1. file: [d055a9c4e5] check-in: [e1e4f9fbe7] user: tangent branch: release, size: 6069
15:04
Dropped two unnecessary CLAs from examples/pep001.pal: DECPRT leaves AC = 0 and SHOWST calls that at its tail end, so removed the CLAs following the two calls to SHOWST. (Patch by Rick Murphy.) file: [21739ccdd5] check-in: [a9330964a2] user: tangent branch: release, size: 6066
14:59
Cosmetic improvements to examples/pep001.pal file: [b8ee10e070] check-in: [283e4497fa] user: tangent branch: release, size: 5970
14:58
Fixed an inverted bit test in the recently-optimized pep001.pal that caused it to skip a jump when it should jump and jump when it should skip. Fix by Rick Murphy. file: [3bb7dbb7cd] check-in: [4b82ef7208] user: tangent branch: release, size: 5955
2016-12-05
05:18
Merged Rick Murphy's optimizations to examples/pep001.pal. Source: https://groups.google.com/d/msg/pidp-8/OQ0LzyQ94QI/FUckXgOqDAAJ file: [ca5bd1f94e] check-in: [61ddd701e5] user: tangent branch: release, size: 5955
2016-12-03
05:26
Removed some unnecessary instruction definitions at the top of examples/pep001.pal. (Things I defined during development but ended up not using in the final version.) file: [a3e04a6873] check-in: [d736d3fccf] user: tangent branch: trunk, size: 5472
2016-12-01
13:54
First version of PEP001 that seems to 100% answer the question as asked, rather than subsets of the problem. It required a new subtotalling mechanism and a lot of new I/O. (Still at least one check to be done.) file: [ca49f42496] check-in: [976f6cbda2] user: tangent branch: project-euler, size: 5620
09:03
Fixed problems with decimal print routine. Routine itself was fine, but the terminal had to be made ready manually. Also added a CRLF after the value, broke program shutdown up into subroutines, and made OS/8 vs. HLT program ending conditional based on whether we're running under OS/8 or not. file: [cbed1f1c78] check-in: [bec3faac16] user: tangent branch: project-euler, size: 4769
08:24
Finally got a version of the PEP 1 program to give the correct value for N < 10. Now to fix the decimal number printing routine. file: [c72bdb4553] check-in: [16a63487eb] user: tangent branch: project-euler, size: 3871
00:02
More tweaks to the Project Euler problem 1 solution file: [8d2317316f] check-in: [43184c3357] user: tangent branch: project-euler, size: 4289
2016-11-30
21:48
Fixed assorted problems in the pep001 attempt. Still broken, but at least part of the problem appears to be the DECPRT routine, so I'm checking my progress in separately so I can chase that. file: [3172ea8f51] check-in: [2cc1518a3f] user: tangent branch: project-euler, size: 4317
09:40
First attempt at solving a Project Euler problem in PAL8 assembly language. It's not entirely working, but I need the checkpoint, so it's going in on a branch. file: [0ff93ba096] check-in: [5eefa878d6] user: tangent branch: project-euler, size: 3983 Added