+OLD CS1 Posted December 12, 2019 Share Posted December 12, 2019 I would like to build some cartridges out of the 4k and 8k images I have without having to use new multi-purpose cartridge boards. I understand most TI cartridges are GROM-based and a bunch have ROM, as well. Who knows off the top of your head which cartridges are best to re-purpose to hold 4k and 8k EPROMs? 1 Quote Link to comment Share on other sites More sharing options...
fabrizio Posted December 12, 2019 Share Posted December 12, 2019 Hi, we have reproduced some of them, to show in the events especially in schools, they use the image files for the eprom 27512 that you find here on atariage. Merry Christmas! 2 Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted December 12, 2019 Share Posted December 12, 2019 I would like to build some cartridges out of the 4k and 8k images I have without having to use new multi-purpose cartridge boards. I understand most TI cartridges are GROM-based and a bunch have ROM, as well. Who knows off the top of your head which cartridges are best to re-purpose to hold 4k and 8k EPROMs?Wouldn't it be the same carts that work for superspace? TI Invaders Munch Man? Sent from my LM-G820 using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted December 12, 2019 Author Share Posted December 12, 2019 1 hour ago, arcadeshopper said: Wouldn't it be the same carts that work for superspace? TI Invaders Munch Man? Sent from my LM-G820 using Tapatalk Could be. I have never looked at that as source material but will check that out. 1 Quote Link to comment Share on other sites More sharing options...
Opry99er Posted December 12, 2019 Share Posted December 12, 2019 8 hours ago, fabrizio said: Hi, we have reproduced some of them, to show in the events especially in schools, they use the image files for the eprom 27512 that you find here on atariage. Merry Christmas! Those are elegant and simple! 1 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted December 13, 2019 Share Posted December 13, 2019 The bottom one is a clone of my 512K board that uses straps on the bottom of the board to semi-permanently set the jumpers (the jumpers are the same as those used on the early version of the board). I like the one designed for Atarisoft cases--I probably need to get a few of those (or design one of my own in the right shape). 1 Quote Link to comment Share on other sites More sharing options...
Opry99er Posted December 13, 2019 Share Posted December 13, 2019 OLD CS1, I wasn't aware you could pull the ROM and GROM from a standard cartridge and just swap them with new EPROMs. That's pretty cool! Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted December 13, 2019 Share Posted December 13, 2019 Before the FinalGROM arrived on the scene I bought a few of the UberGROM boards. They were a little more expensive, but they used the 49F040 EEPROM which meant I could easily reprogram them without having to mess with a UV box. I know the UberGROM is overkill for most stuff, but a single board supporting a socketed chip like that, without the 1284P socket would have been useful. I like the 49F040 because it can handle up to 512K images and there are no pins to bend or weaken after multiple pulls and insertions over time. Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted December 13, 2019 Author Share Posted December 13, 2019 2 hours ago, Opry99er said: OLD CS1, I wasn't aware you could pull the ROM and GROM from a standard cartridge and just swap them with new EPROMs. That's pretty cool! Not perfectly, but Thierry's site shows pins which are different between the masked ROM and an EPROM. Of course, this provides no banking so the max you can do is 8k. 1 hour ago, --- Ω --- said: Before the FinalGROM arrived on the scene I bought a few of the UberGROM boards. They were a little more expensive, but they used the 49F040 EEPROM which meant I could easily reprogram them without having to mess with a UV box. I know the UberGROM is overkill for most stuff, but a single board supporting a socketed chip like that, without the 1284P socket would have been useful. I like the 49F040 because it can handle up to 512K images and there are no pins to bend or weaken after multiple pulls and insertions over time. I do the same with the 512k board. Neat, but not the intention of this exercise. Quote Link to comment Share on other sites More sharing options...
Tursi Posted December 14, 2019 Share Posted December 14, 2019 (edited) 22 hours ago, --- Ω --- said: I know the UberGROM is overkill for most stuff, but a single board supporting a socketed chip like that, without the 1284P socket would have been useful. I like the 49F040 because it can handle up to 512K images and there are no pins to bend or weaken after multiple pulls and insertions over time. You know that you don't have to populate the 1284 socket, right? Nothing on the board requires it. It works as just ROM, just GROM, or both. Edited December 14, 2019 by Tursi 2 Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted December 14, 2019 Share Posted December 14, 2019 15 minutes ago, Tursi said: You know that you don't have to populate the 1284 socket, right? Nothing on the board requires it. It works as just ROM, just GROM, or both. Oh, I already know, I still have a couple setup like that. I mentioned it only because I thought it would have been nice at the time to have a less expensive board that only had the socket for the 49F040 sort of like a PLCC version of the "Red Board". Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted December 14, 2019 Share Posted December 14, 2019 Theirs flash chips that go in a regular red board also a plcc adapter is easy to add to oneSent from my LM-G820 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted December 14, 2019 Share Posted December 14, 2019 3 minutes ago, arcadeshopper said: Theirs flash chips that go in a regular red board also a plcc adapter is easy to add to one Sent from my LM-G820 using Tapatalk Would you still be able to close the cartridge case using an adapter? How much are they? If an adapter did not add too much to the overall cost, bringing close in price to the UberGROM, it might still be feasible. Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted December 14, 2019 Author Share Posted December 14, 2019 Based upon the information at MainByte on building a super-card and the specs on the 2732, it looks like the TI Invaders cart board, of which I have plenty, can be used to hold an 8k EPROM with similar wiring to the super-cart. 1 1 Quote Link to comment Share on other sites More sharing options...
Tursi Posted December 14, 2019 Share Posted December 14, 2019 6 hours ago, --- Ω --- said: Oh, I already know, I still have a couple setup like that. I mentioned it only because I thought it would have been nice at the time to have a less expensive board that only had the socket for the 49F040 sort of like a PLCC version of the "Red Board". No, that's what I'm saying. Don't mount the socket. Holes are free. 1 Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted December 14, 2019 Share Posted December 14, 2019 5 hours ago, Tursi said: No, that's what I'm saying. Don't mount the socket. Holes are free. You know THAT never crossed my mind! I've purchased all my cartridges pre-built. That does bring up a question though, if the Red Board and the Blue Board were still readily available, what the price difference would be between the two if the blue one came with some open holes in the 1284P location. Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted December 14, 2019 Share Posted December 14, 2019 Both of those boards ARE still readily available. The bare board cost is the same for either one. . . 3 Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted December 15, 2019 Author Share Posted December 15, 2019 Additionally, I just had a good look at the board of a Parker Bros. game, Q*Bert, from which I reclaimed a cart shell. There is a 2764 (8k x 8,) on one side of the board next to PB's GROM-like device and the other side looks to be a spot for a 2732 (4k x 8.) This would suit the purpose, as well. Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted December 16, 2019 Share Posted December 16, 2019 On 12/14/2019 at 7:39 AM, Ksarul said: Both of those boards ARE still readily available. The bare board cost is the same for either one. . . Yeah... BUT, you know me, in my advancing decrepitude I buy everything pre-assembled. Quote Link to comment Share on other sites More sharing options...
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