+Ksarul Posted April 23, 2014 Share Posted April 23, 2014 Note, the 9118 VDP, all four of the specialized chips (OSO, POLLO, MOFETTA, and AMIGO) are missing, the RAM is not present, and none of the daughter boards are installed (Pascal, Extended BASIC, and the start menu boot ROM board). I have three or four partially assembled motherboards for the 99/8, and all of them are more complete than this one is. Quote Link to comment Share on other sites More sharing options...
Gary from OPA Posted April 23, 2014 Share Posted April 23, 2014 Note, the 9118 VDP, all four of the specialized chips (OSO, POLLO, MOFETTA, and AMIGO) are missing, the RAM is not present, and none of the daughter boards are installed (Pascal, Extended BASIC, and the start menu boot ROM board). I have three or four partially assembled motherboards for the 99/8, and all of them are more complete than this one is. and yet the price is already almost $200, with 4 days left. For those wondering how much is really missing, compare that 99/8 ebay pictures, with pictures of 'working' model here: http://www.ti99.com/ti99stegg.htm 1 Quote Link to comment Share on other sites More sharing options...
RXB Posted April 23, 2014 Share Posted April 23, 2014 Wow that is cool. 128K RAM!!! Quote Link to comment Share on other sites More sharing options...
idflyfish Posted April 23, 2014 Share Posted April 23, 2014 Man I wish I had a TI-99/8... 1 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted April 24, 2014 Share Posted April 24, 2014 I am now the owner of one of the machines that he shows on that page--S/N 80. I also have one of the last ones completed--SN 103 on the case but SN 134 inside. Both of them have the Pascal GROMs and ROM, but it isn't working on one of them. I also have a pair of 128K cards and a 512K card for them (along with the necessary Armadillo Interfaces). Lastly, I have an RS-232 card with a DSR designed for the /8. Quote Link to comment Share on other sites More sharing options...
Gary from OPA Posted April 24, 2014 Share Posted April 24, 2014 Price on that 99/8 mobo now past the $500 mark, I fear it might break $1000 by tomorrow, maybe even $2000 by the end. Quote Link to comment Share on other sites More sharing options...
+Vorticon Posted April 24, 2014 Share Posted April 24, 2014 I wonder if the 99/8 could be reverse engineered... Quote Link to comment Share on other sites More sharing options...
+mizapf Posted April 24, 2014 Share Posted April 24, 2014 Well, except for the AMIGO mapper chip we know in detail what is happening on the board. And for that one we know the external behavior and the equations. So it could certainly be reverse engineered; in fact, in a virtual sense it is what I do in MESS. The only issue today is that you do not get GROMs anymore, so you'll have to build a hardware emulation of GROMs. 1 Quote Link to comment Share on other sites More sharing options...
+Vorticon Posted April 24, 2014 Share Posted April 24, 2014 Well, except for the AMIGO mapper chip we know in detail what is happening on the board. And for that one we know the external behavior and the equations. So it could certainly be reverse engineered; in fact, in a virtual sense it is what I do in MESS. The only issue today is that you do not get GROMs anymore, so you'll have to build a hardware emulation of GROMs. So technically speaking, a talented FPGA programmer could recreate the functions of a 99/8 on a single chip from currently available information? Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted April 24, 2014 Author Share Posted April 24, 2014 Everyones 'buddy' has sure been selling a lot of stuff... <HERE> Then the <NOT SOLD> too... Quote Link to comment Share on other sites More sharing options...
+mizapf Posted April 24, 2014 Share Posted April 24, 2014 So technically speaking, a talented FPGA programmer could recreate the functions of a 99/8 on a single chip from currently available information? In principle, yes. If emulation does not suffice for you. I know, many people believe in what they can grasp with their hands, but many old systems will probably not be worth the effort to rebuild them, but we can get an experience with emulation. I'd be really interested how the 99/2 felt like or the CC-40 (the former already being implemented in MESS but not working, the latter envisaged to be added). Or the 99/4B and 99/5 which I believed to be phantoms until I recently saw obviously existing prototypes on the Web. BTW, anyone coming to Birkenau on Saturday with a Hexbus floppy drive? I'll bring the screwdriver. :-) 1 Quote Link to comment Share on other sites More sharing options...
slinkeey Posted April 25, 2014 Share Posted April 25, 2014 Everyones 'buddy' has sure been selling a lot of stuff... <HERE> Then the <NOT SOLD> too... Are you stalking someone on ebay? Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted April 25, 2014 Share Posted April 25, 2014 (edited) Michael, I'm pretty sure that Michael Becker owned one of each of those at one point in time. I know he brought one of them to one of the TI Treffs that I was at. . .I think it was the 99/5. I won't be able to bring a Hex-Bus floppy, as I won't be able to come to Birkenau, unfortunately. Doesn't Ciro have one? Edited April 25, 2014 by Ksarul Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted April 25, 2014 Share Posted April 25, 2014 The 99/8 mobo has finally slowed down a little, it is over $600 though, which is really high for what the buyer is going to get out of it. . . Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted April 25, 2014 Share Posted April 25, 2014 In principle, yes. If emulation does not suffice for you. I know, many people believe in what they can grasp with their hands, but many old systems will probably not be worth the effort to rebuild them, but we can get an experience with emulation. The MiniMig and analogous projects have been very popular. Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted April 25, 2014 Author Share Posted April 25, 2014 Are you stalking someone on ebay? No, I was just curious to see how much business the dude gets. Interesting how he charges $8.95 + shipping for some software on disk that you can get for free at WHTECH. Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted April 27, 2014 Author Share Posted April 27, 2014 If a NewOldStock in the box TI-99/4A interests you, you might want to check << THIS >> out... Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted April 27, 2014 Share Posted April 27, 2014 The 99/8 motherboard went for $710 in the end. I have a feeling the winner will be definitely disappointed when the figure out what would be needed to turn it into a complete machine. All of the GROMs and ROMs are missing too. I wonder though, we might be able to replicate the GROM boards with a variant of the UberGROM. . .and there is enough data out there to replicate the special chips, so it just might be possible to bring one of those spare mobos to life. . . Quote Link to comment Share on other sites More sharing options...
+hloberg Posted April 28, 2014 Share Posted April 28, 2014 Corcomp 9900 Micro-Expansion System TI-99/4A Texas Instruments http://www.ebay.com/itm/Corcomp-9900-Micro-Expansion-System-TI-99-4A-Texas-Instruments-/221427180151?pt=LH_DefaultDomain_0&hash=item338e16a277 price starts at $305.00. Was it that much new? Quote Link to comment Share on other sites More sharing options...
Ed in SoDak Posted April 28, 2014 Share Posted April 28, 2014 (edited) New was $299.95 in a summer 1988 Triton catalog, no drives. With one drive $499.95, two drives $619.95. Tenex was the same price for the base unit by itself, but was cheaper for the one drive system at $459.95. At this guy's auction price, may as well go for a PE box. They sell for less used, have more expansion possibilities plus if only one card fails, you don't lose the whole circus. At least his shipping is free on the Corcomp. Edited April 28, 2014 by Ed in SoDak Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted April 29, 2014 Author Share Posted April 29, 2014 There are some pretty good prices on the Lantronix UDS-10's at the moment. Check out << THESE >> selections if you've been interested in getting your TI-99/4A on the Internet. If you don't know what it is, or what it can do for you, try << HERE >> for a little background information. Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted May 4, 2014 Author Share Posted May 4, 2014 A SNUG ASCSI2 SCSI BOARD AND MANUAL UP FOR AUCTION << HERE >> EDIT: Thanks for the correction Ksarul, I'm going to have to STOP getting online before I wake up in the morning or have my first cup of coffee. Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted May 4, 2014 Share Posted May 4, 2014 Note, that is NOT a Geneve9640. It is a SNUG ASCSI2 board. It is usable with a TI-99/4A, a Geneve 9640, or a 99/8 though. Quote Link to comment Share on other sites More sharing options...
+hloberg Posted May 5, 2014 Share Posted May 5, 2014 Ti-99 thermal printer. I wonder if it's possible to even get paper for it anymore? http://www.ebay.com/itm/TI-99-4a-Solid-state-thermal-printer-/321394120853?pt=US_Vintage_Computing_Parts_Accessories&hash=item4ad4951895 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted May 5, 2014 Share Posted May 5, 2014 I've got about 10 good rolls of it for mine. It does show up every now and again on eBay too--and there were some third-party sources for it as well, so it helps to look for it by width of roll. I think there is even one source still making it new. . .as it apparently has uses in things other than the TI thermal printer. Quote Link to comment Share on other sites More sharing options...
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