ti99user

Great! Do you plan to openhardware/opensource it (e.g. github)? Which schematic/PCB software do you use? Thnx.

Anyone made a complete mirror or uploaded somewhere?

About the SCART-Genie board but also the breakout boards would be nice.

Do you provide the Eagle project, too? Thnx. ti99user

Great Job, can you post the full schematic picture (or a link)? Thnx. ti99user

Important information is 32k RAM expansion. I know the jumper settings are documented on the board but documenting there meaning would be great. BTW: Do you offer a schematic, too? ti99user

OK, thanks to all who answered. Didn't find any documentation but 32k memory expansion was needed. Works well now. BTW: Any documentation of the jumpers for the V9g version available? Thank you. ti99user

Hello, Tried to setup a "TI99/4A 512k Cart v09g" with a M27C4001-10F1 EPROM. Jumpers are set default for 32pin version. Tried 3 different EPROMs with EPROM content from this thread: * 512kUtilities052415a.bin * 053015Gamecart4.bin * Games6.bin Topics are: 1.) Menu is not displayed every time 2.) If displayed and pressing the menu nothing happens Tried it on 2 different european PAL TI99/4A. Any ideas? Is the EPROM content correct? Thank you. ti99user

Yes, I have which should support the flash. But it is parallel interface only. Have to look for an old PC. So alternative programming of the external flash via TI99 would be fine.

Ok, tried it with the following configuration: 1.) NanoPEB (2 different) 2.) F18A, V1.5 Firmware 3.) Programmed only the 128k Flash into the ATMEGA, the EEPROM into the ATMEGEA and the fuses with the command line stated above (so no 512k file programmed into external flash) But only some modules work. With one nanoPEB XB2.7 only blue screen, with second wild characters. Any ideas? Must the external flash also be programmed (I guess)? What's the recommended way for programming all 3 files (especially the external flash without an external flash programmer)? Thnx.

No, I didn't have a 32k attached. Worked with nanoPEB now, all tests passed :-) What's a recommended "package" to load into the AVR and flash?

OK, programmed now with my posted command line. I'm getting further, but still I guess an issue: 1.) GROM TEST menu is displayed as cartridge (2) => fine 2.) Pressing 2 3.) Displayed: >>-- CART CONV BY TURSI --<< 4.) Nothing happens for at least 10 min What should happen, is this normal? BTW: avrdude-5.11 worked well but avrdude-6.1-mingw32 crashed. Anyone else having same issue?

Which type? Thank you

So you are using?: http://www.mouser.at/new/yamaichi/yamaichiburnin/ Which EPROM Burner? Thank you. TI99User

Great, so command line looks like: avrdude -P \\.\com5 -c stk500v2 -p m1284p -U flash:w:ubergrom.hex -U eeprom:w:ubergrom.eep -U lfuse:w:0xC2:m -U hfuse:w:0xD8:m -U efuse:w:0xFC:m -U lock:w:0xFF:m BTW: GUI looks different than Avrdudess. Which program do you use Will try it next weekend. Thank you. TI99User

Ok, GUI looks good. Will try it next weekend. Thank you. TI99User

Hello, I ordered a UberGROM without ATMEL chip and programmed it myself (V101): avrdude -P \\.\com5 -c stk500v2 -p m1284p -U flash:w:ubergrom.hex -U eeprom:w:ubergrom.eep Programming Flash/EEPROM worked well without any problems. Putting it into the TI99 without additional flash (with F18A): Nothing happens. Putting it into when powered on: RESET works well, but still no Uber GROM Tried it also putting the external flash in without success. Jumper settings are default jumper settings. Any ideas? Are the boards from arcade shopper tested? Thank you. TI99User