+Schmitzi Posted March 1, 2015 Share Posted March 1, 2015 Hi 99ers, I have found a "strange" module, maybe somebody knows something about ? Thanks for all infos Ralf 3 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted March 1, 2015 Share Posted March 1, 2015 (edited) It looks like it is another variant of the Heiner Martin Supermodul board (at least it is using that board layout for its starting point). With that initial identification, it is a GRAM module. If you look at the side of the board that isn't visible, you should find two groups of stacked memory chips (one of five 8K chips and one of two (the stack of two may possibly have a third chip that is a loader ROM)). The switch is to write protect the cartridge. Nice use of a pair of eraser (rubber, for you Europeans) halves too. . . Edited March 1, 2015 by Ksarul 3 Quote Link to comment Share on other sites More sharing options...
+Schmitzi Posted March 1, 2015 Author Share Posted March 1, 2015 Oh thanks a lot Ksarul, I was a bit anxious to open the rest of the module, as the switch seems to "block" a bit. But I will check that later. Ralf 1 Quote Link to comment Share on other sites More sharing options...
humeur Posted March 1, 2015 Share Posted March 1, 2015 look this http://atariage.com/forums/uploads/monthly_12_2014/post-25992-0-29380100-1418755195.jpg Jean Louis 1 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted March 1, 2015 Share Posted March 1, 2015 You're right Jean Louis--the homebrew TI Calc cartridge board you show there is done on the same Heiner Martin circuit card, with it just set up to use ROM instead of RAM. 1 Quote Link to comment Share on other sites More sharing options...
+Schmitzi Posted March 1, 2015 Author Share Posted March 1, 2015 hmmm, I would prefer RUM 1 Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted March 1, 2015 Share Posted March 1, 2015 hmmm, I would prefer RUM Too volatile for computer use. 1 1 Quote Link to comment Share on other sites More sharing options...
Flottmann1 Posted March 1, 2015 Share Posted March 1, 2015 (edited) have you the 2 Eproms from TI-Calc and can upload it, would like to test my Heiner Martin Module Edited March 1, 2015 by Flottmann1 1 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted March 1, 2015 Share Posted March 1, 2015 Note that the one in that TI-Calc picture has been modified for a 256K EPROM, as it needs four ROM banks. 1 Quote Link to comment Share on other sites More sharing options...
+Schmitzi Posted March 1, 2015 Author Share Posted March 1, 2015 have you the 2 Eproms from TI-Calc and can upload it, would like to test my Heiner Martin Module oh yes, feel free to upload as much as you can ftp://u67140205-atariage:TeXasTI994A@toxic-instruments.com Quote Link to comment Share on other sites More sharing options...
humeur Posted March 2, 2015 Share Posted March 2, 2015 (edited) My Heiner Martin Module is not standard the eprom emulation grom is 27c256 no 27c128. I have no dump of this eprom. Jean louis Edited March 2, 2015 by humeur 1 Quote Link to comment Share on other sites More sharing options...
Flottmann1 Posted March 2, 2015 Share Posted March 2, 2015 I also have a 256K Eprom-Modul here 'Cannonball Blitz' from the German Magazine 'TI-Revue 5/85' 3 Quote Link to comment Share on other sites More sharing options...
mantadoc Posted November 10, 2016 Share Posted November 10, 2016 Hi 99ers, I have found a "strange" module, maybe somebody knows something about ? Thanks for all infos Ralf Did you try it Ralf ? 1 Quote Link to comment Share on other sites More sharing options...
+Schmitzi Posted November 10, 2016 Author Share Posted November 10, 2016 nope Time is too tight to mention Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted March 11, 2018 Share Posted March 11, 2018 I received the current issue of TIjdingen today. It had a notice in it that they recently found out that Heiner Martin had passed away on March 20, 2016 after a short but serious illness at the Uni-Klinikum in Ulm. Yet another of the folks who helped us get into the internals of the 99/4A is no longer with us. . .thanks to Beery Harmsen for the update! 1 Quote Link to comment Share on other sites More sharing options...
+Schmitzi Posted March 11, 2018 Author Share Posted March 11, 2018 sad thing one TI dinosaur less rest in peace Quote Link to comment Share on other sites More sharing options...
+FALCOR4 Posted April 8, 2018 Share Posted April 8, 2018 He was an inspiration and a pioneer for the 99. 1 Quote Link to comment Share on other sites More sharing options...
+acadiel Posted July 16, 2020 Share Posted July 16, 2020 Not meaning to necroressurect a thread, but I got a nice reproduction of the Heiner Martin 1985 cart board in the mail from Mantadoc. It has two spots for 2764s along with the GROM logic ICs. Does anyone know which ones of these were GROM and which was ROM, and what the original use cases of the 8K GROM + 8K ROM was? I see people made glorious modifications above to 128K and 256K, which is awesome. Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted July 18, 2020 Share Posted July 18, 2020 speaking of cart boards, i aquired these recently 1 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted July 18, 2020 Share Posted July 18, 2020 That's an interesting weird board set. The bottom board has all of the addressing logic for the GROM space and the boards that plug into the connector have the EPROMs along with what looks like the ROM and GROM select chips (and wiring, as I suspect the wires to either side of the LS42 are setting the GROM select number for the EPROMs). 1 Quote Link to comment Share on other sites More sharing options...
+acadiel Posted July 20, 2020 Share Posted July 20, 2020 @arcadeshopper - Was it that set that someone on Facebook had posted recently? That's a really cool homebrew set of carts. Like Ksarul said - having it split up like that is kind of cool. Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted July 20, 2020 Share Posted July 20, 2020 [mention=25598]arcadeshopper[/mention] - Was it that set that someone on Facebook had posted recently? That's a really cool homebrew set of carts. Like Ksarul said - having it split up like that is kind of cool. Yes I was able to acquire it from them before they were banished from Facebook Sent from my LM-V600 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted July 22, 2020 Share Posted July 22, 2020 Never having joined Facebook I have no clue to how they operate. I also do not want to know who the banned person is. I would like to know however what offense a person must commit to get them booted from the platform. Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted July 22, 2020 Share Posted July 22, 2020 Never having joined Facebook I have no clue to how they operate. I also do not want to know who the banned person is. I would like to know however what offense a person must commit to get them booted from the platform.They have been committing fraud in the retro communities for years. Started in the apple fritter groups in like 2007. I'm assuming the account got reported over and over until Fb banned it. I bought an additional non ti item from him but it seemed like he was never going to ship it and then even after he said he did ship it no tracking for like a week and a half.. popped up in tracking finally a few days after he blew up at me asking for details as to where it was shipped at.. shrug well see what I get in the boxSent from my LM-V600 using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
jens-eike Posted July 22, 2020 Share Posted July 22, 2020 On 7/16/2020 at 9:26 PM, acadiel said: Not meaning to necroressurect a thread, but I got a nice reproduction of the Heiner Martin 1985 cart board in the mail from Mantadoc. It has two spots for 2764s along with the GROM logic ICs. Does anyone know which ones of these were GROM and which was ROM, and what the original use cases of the 8K GROM + 8K ROM was? I see people made glorious modifications above to 128K and 256K, which is awesome. The EPROM(s) parallel to the 'LS161 counters is the GROM and the EPROM perpendicular is the ROM. Quote Link to comment Share on other sites More sharing options...
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