jbdigriz
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TMS7000 onboard ROM Dumping project
jbdigriz replied to acadiel's topic in Tomy Tutor, CC40, 99/2, 99/8, Cortex, 990 mini
ROM dumps for the TMS7000 EVM here: https://electrickery.nl/comp/tms7k/doc/ And much else. -
By the time the TMS7000 evolved into or was replaced by the TMS370 series the standalone XDS was still in use, but it appears to me that TI decided to host the debugger on a PC, or other computer, rather than onboard the XDS. So there may not have been a production XDS/44, nor possibly even an XDS/33, or if there were, it was only briefly. Just guessing, though. Like to know for sure, but seems possible, if not likely. By that time the PC add-in emulators and SDKs were available, so most of the software tools as well as the debugger could be hosted on a PC. Reference: https://www.ti.com/lit/ug/spnu127a/spnu127a.pdf, Section 17.
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Accoding to this brochure in the tranche of documents above, http://bitsavers.org/components/ti/TMS7000/brochure/MPL_54_TMS7K_Brochure_1983.pdf, p. 14, the XDS/44 is/would be a "Standalone emulator. All features of XDS-33 plus bulk memory storage capability with additional board (to be announced)." TM990/303, maybe? Bubble memory? Not sure if this XDS was ever in production, but should be possible to replicate the hardware at least.
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New TMS7000 additions to bitsavers today, including the generic http://bitsavers.org/components/ti/TMS7000/xds22/SPDU017_XDS_22_Installation_And_Operation_Guide_198310.pdf, which tells us that slot 3 is for "emulator board #2". Not sure if that is for a 2-board set, multiples of a target, or for two different targets. Wonder if it was ever used? Also specifically lists slots 5-7 as TM990. Also, http://bitsavers.org/components/ti/TMS7000/xds22/SPDU019_XDS_Breakpoint_Trace_Installation_And_Operation_Guide_198310.pdf, http://bitsavers.org/components/ti/TMS7000/xds22/SPDU020_XDS_TMS7000_Emulator_Hardware_198403.pdf, board photos, rom images, and schematics for the TMS7000 EVM, and a number of TMS7000 series datasheets and manuals, in http://bitsavers.org/components/ti/TMS7000 directory and the evm subdirectory there. Looks to be the material Fred J Kraan mentioned archiving, over on the vcfed forums. You can also find it on his site at https://electrickery.nl/comp/tms7k/doc/. Thanks, Fred! Thanks also, Jaak Bartok, the generous lender of the materials (see https://hackaday.io/project/19276-multi-t for a project they were used for.) And thanks once again, bitsavers!
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CHM live event: "Dialed In The Prehistory of Social Media"
jbdigriz replied to jbdigriz's topic in TI-99/4A Computers
When you've been around the block as many times as I have, you do tend not to trust a lot of things going on these days. I understand. I did check out her Wikipedia page. Somewhat unconventional background, but she does seem like a nice lady, and obviously smart. Perhaps she does have some ideological blinders, but don't we all? It'll be interesting to see what she has to say, anyway, even if it's not clear how much BBS experience she's had, as opposed to Usenet and IRC. Interesting, Driscoll seems to be an authority on Minitel. Ties in with the teletext stuff being discussed in other topics here. CHM is also hosting https://computerhistory.org/events/techfest-2 Maybe not of particular interest to enthusiasts working on vintage machines, but it helps keep the lights on and the preservation work going. If I was in the area, I'd want to check it out. -
CHM live event: "Dialed In The Prehistory of Social Media"
jbdigriz replied to jbdigriz's topic in TI-99/4A Computers
Jason Scott's classic. -
CHM live event: "Dialed In The Prehistory of Social Media"
jbdigriz replied to jbdigriz's topic in TI-99/4A Computers
I get where you could see that, CS1, but I don't think it'll be a waste of time. Have a good 'un. -
Single points of failure. Whether my host, whtech, or whatever. That's why I'm going with federation and investigating integrating with IPFS. I do need to sound out Don on mirroring. Rsync access would be great. Would reduce the load on his server. I had a disk failure on the system I was mirroring bitsavers on a while back, but I got a nice FreeBSD raidz2 set up the other day and will be resume that and some other sites, pending a fiber connection locally or USPS backup.
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Usagi Electric on YouTube
jbdigriz replied to Stuart's topic in Tomy Tutor, CC40, 99/2, 99/8, Cortex, 990 mini
I will keep an open mind about it, myself. Perhaps the museum would be, or is, interested in taking this on. Like I said, anything I can do to help, whichever way this goes. But we're probably past the point where further public discussion of this particular prospect will be helpful to anyone, for the time being. Regards, everyone, jbdigriz -
For a long time I've wanted to have some place to share files from, collaborate on vintage computer projects, and so forth, so I've added a Nextcloud (https://nextcloud.com/) instance to https://dragonsweb.org/nextcloud. Just a sandbox for now, but a production instance is forthcoming. Still configuring things and working out the kinks. It's on a smallish VPS, 100G, 2G RAM, single core. Been having OOM issues, so I've had to disable spamd and add more swap to keep kswapd from going nuts. Swap on SSD may not be the best idea, so the final production server will be on a bigger VPS with another core, that is not also a mail server. For now, the test instance will suffice to play around, get more familiar with Nextcloud, and test ideas. Nextcloud is federated, so you too can host your own instance if you wish, or just register on mine We'll be trying different integrations with other platforms as well, so I'm pretty excited about it all. Testers welcome. I've set registration up to require admin approval, to slow down the spammers. jbdigriz
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Usagi Electric on YouTube
jbdigriz replied to Stuart's topic in Tomy Tutor, CC40, 99/2, 99/8, Cortex, 990 mini
Sorry, forgot to include that. My bad; Note to self: Beats chasing forum threads if you include these things. https://www.blunham.com/Radar/Teletext/index.html The Blanden 990, for anyone else interested: https://www.computinghistory.org.uk/det/11554/Texas-Instruments-TI-990-Computer-System/ Please give us a report when you do get to the museum. Or anyone else who knows it or has been there. Sorry if I've complicated things for Stuart, the seller, or anyone else with my comments here or in the TM990 boards topic in this sub-forum. It's just that this really is a quite rare and unique opportunity to thwart historical entropy. I stand ready to help any way I can either way, though. Please let me know, @Stuart.