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I’m about to buy two F18A’s, one for my “new” TI-99/4A, and one for my 65816 based homebrew computer MARC-2. As I said before, my intention is to write a few little machine language games for both systems simultaneously. So both having the same VDP, surely is a huge advantage. Even more because the F18A is becoming almost a standard in the TI community. Of course I’ve looked on Matthew’s site and on this forum, but I probably overlooked one or two things. MARC-2 has a 3.3V data bus on the CPU side, and a 5V data bus on the RAM side. In between, there is a 3.3V but 5V tolerant CPLD. (XC95288XL) My question is, can I connect the F18A to the 3.3V side? And just out of curiosity, who of you uses the F18A with another computer than the TI-99/4A? *------ Although MARC-2 is 3.3V, it’s not the definitive destination for the F18A. I’m designing a new computer, MARC-3 (My Adorable Retro Computer version 3). It’s practically almost ready, except for the actual build. The main difference is that it will be modular, that is, I’ll use a ground plane, similar to the S-100 bus, and carts for the different parts of the computer system. The second difference will be that it’s running solely on 5V.
I have written a new core for the Ultimate Cart. It is an implementation, a behavior based clone, of the Project Veronica 65816 cartridge. The 65816 implementation is not cycle exact but seems to run fairly reliably so far. In order to get it running you need to download and flash http://www.64kib.com/veronica/veronica20180414.pofusing the USB blaster. You will need to flash back the standard core to use it as a flash card reader later. You will then need software, I suggest trying the following two: http://atariage.com/forums/topic/164097-project-veronica/?p=3190927:atr file with tests and demos http://atariage.com/forums/topic/164097-project-veronica/?p=3227906:Veronica Basic Many thanks to Zenon/DIAL, Marek Konopka, and Simius for their work on the original. Thanks for Robin Edwards for his work on the Ultimate Cart. Thanks to Robert Finch for his 65816 core. Thanks for Avery Lee for his work on the documentation of the Veronica cart and Veronica Basic. See https://github.com/robinhedwards/UltimateCartfor details about the Ultimate Cart. See http://atariage.com/forums/topic/164097-project-veronica/for details about Project Veronica. See https://github.com/robfinch/Cores/tree/master/FT816for the 65816 core. See http://www.64kib.com/atarixlfpga_svn/trunk/atari_800xl/ultimate_cart/veronica/for my core to tie it all together. Video demos:
Has anyone ever tried to run some of the modern CPU benchmarks (like SPECint and SPECfp) on the classic 8-bit (6502, Z80) and 16-bit (68000, 65816) CPUs? My googling has found nothing. (Only thing I could find was a rating for the 68060.) How hard would it be to set something like that up?