Posts by hairyvisionary@fosstodon.org
(DIR) Post #AkGZ5WHD2AQJE9fgTA by hairyvisionary@fosstodon.org
2024-07-21T13:01:02Z
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@fvzappa @twylo So um in my volunteer gig at FOPAL I sometimes peek in the various discard bins. The other day I found in one an Infomagic "Linux Developer's Resource CD-ROM" set from Dec 1994. Looking it up on eBay for a lark I was surprised to find sales for this sort of thing from the 1990s from $20-$35, more if in shrink wrap (the one I had in hand was not). Higher asking prices too, definitely some hopium abuse going on in this market!
(DIR) Post #AlVHbVNJ5H4Vh6XXRw by hairyvisionary@fosstodon.org
2024-08-30T20:24:44Z
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@futurebird I look at this and think of later-80s "sports" tape players for runners &c: pop your tape in, set it playing, go for your run; except these won't be so vibration- or moisture-resistant, and I feel like I have arrived here from a more elegant age...What I still have from the early 90s is an Aiwa that is not much larger (maybe 2x the volume), and is a stereo recorder and AM/FM receiver, but isn't all that sporty
(DIR) Post #Aq1b2pGHrm3x4Wu4KO by hairyvisionary@fosstodon.org
2025-01-12T22:44:31Z
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@dbattistella Do remember that people in the state of California were given the opportunity in 2024 to put a stop to this sort of slavery and voted against that propositionSigned, a person in the state of California who wonders about his neighbors
(DIR) Post #Ar81JRQeVpq41i4Csy by hairyvisionary@fosstodon.org
2025-02-15T02:16:28Z
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@tomjennings suspect you may be looking for http://www.retroarchive.org/maslin/disks/8inch/index.html which has links to cpm-dist.td0 and cpm-dist.zip
(DIR) Post #Ar8HWZvtnx69Qry6Uq by hairyvisionary@fosstodon.org
2025-02-15T03:24:19Z
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@tomjennings am looking at CPM.SYS from cpm-dist.zip with hexdump -C and at 0x0080 I see "c3 5c 37 c3 58 37" and am thinking those are in the ballpark for a 20K system, the CCP ought to start at 0x3400
(DIR) Post #Ar8JLrlTMkIPSZ6xQ8 by hairyvisionary@fosstodon.org
2025-02-15T05:38:37Z
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@tomjennings td0 is a Teledisk disk-image file, which is somewhat version-dependent and not what I think of as well-documented (though this could have improved in the last 20-30 years). That's why I looked at the zip archive.It has been a while since I thought about how to sysgen a CP/M system. My thinking is that the blob of code that gets loaded from a boot loader must have previously been loaded from stuff in a file or files. Like, um, CPM.SYS.
(DIR) Post #Ar8QD8MJ01yTzx7fLk by hairyvisionary@fosstodon.org
2025-02-15T06:55:27Z
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@tomjennings I actually did live through the late CP/M era, running it on a Z80 card in an Apple ][ so I got a pre-configured diskette in the box with the card and made a copy of that as my everyday booter. It wasn't 'til later that I got to read a CP/M 2.2 Alteration Guide but even that was probably 30 years ago.I am remembering reading about MOVCPM and thinking it must know where all the absolute references (e.g. JMPs and CALLs) are so it can modify them for the desired system address.
(DIR) Post #Ar9ldjGYh5IeBluwLo by hairyvisionary@fosstodon.org
2025-02-15T22:30:18Z
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@tomjennings I did not but I think if you look at http://www.cpm.z80.de/source.html you will find a link "CP/M 2.2 ORIGINAL SOURCE" to a cpm2-plm.zip file which includes CPMOVE.ASM which looks like 8080 ASM source for something that might be itIt is AMAZING what has been allowed to escape
(DIR) Post #ArA2cvHMF8rsNSUbEO by hairyvisionary@fosstodon.org
2025-02-16T01:40:38Z
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@tomjennings I hope I helped you get there faster!I don't recall a CPM.SYS file. I remember there being a CP/M in system tracks that was the CCP and BDOS and a BIOS, and being kinda mystified about how one would change the BIOS but not really needing to change the BIOS because the hardware vendor had already done that (which is what CP/M was like in its decline, there for you to use).
(DIR) Post #ArFkhSdPXLlClBa7BA by hairyvisionary@fosstodon.org
2025-02-18T19:48:02Z
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@tomjennings Not only can it run in 20KB of RAM, it can run on a processor with a clock frequency of maybe as much as 2MHz (being lazy and not looking at what could actually be in an MDS800, just remembering what was in an HP2645 terminal ~1976).If your CP/M came with hardware in the 1980s you might not have got the DRI manuals. It was toward the end of the 1980s when I saw them (with a Morrow Decision I which had its own sort of interesting manuals, for the Z80 card with the MMU).
(DIR) Post #As7lKUhTjEuCUQW4XI by hairyvisionary@fosstodon.org
2025-03-16T21:09:30Z
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@tomjennings Is it time for me to go see if anyone's hooked up Gnus to ActivityPub? Scorefiles would be a winning move.
(DIR) Post #AtGB10Nfv7hx0GgBBw by hairyvisionary@fosstodon.org
2025-04-19T20:27:05Z
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@tomjennings It was...interesting...seeing Debian w/LXDE in use at a friends of the library organization. Systems were set up to auto-login on boot (shared use by a bunch of volunteers), to print to network-attached printer, to have a webulator (IceWeasel/Firefox, later also Chrome) and LibreOffice.And, well, they got used. But there were a couple folks being vocal about how volunteers want new stuff, and so we got some new all-in-ones with Windows 10.
(DIR) Post #AysMGHrrxYx5a4UdO4 by hairyvisionary@fosstodon.org
2025-10-04T19:52:38Z
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@tomjennings there is a LOT of "oh we'll just fix up those minor details after the upgrade" thinking that goes on, especially among the folks who just want to get the "upgrade" done