P-GRAM+ substitute!

[aftyde]

In my main TI PEB I have a P-GRAM+ card and love the thing. I can essentially load any module from disk and access it. Given that I have never seen another P-GRAM+ card in the wild - is there another simple way to load and try carts that doesn't require burning and swapping ROMS???

[+RXB]

Yea I have had or owned most of the GRAM devices. PGRAM+, GRAMULATER and GRAMKRACKER.

Combined with a SCSI Card and 4 SCSI drive is was crazy fast to switch carts.

[+arcadeshopper]

In my main TI PEB I have a P-GRAM+ card and love the thing. I can essentially load any module from disk and access it. Given that I have never seen another P-GRAM+ card in the wild - is there another simple way to load and try carts that doesn't require burning and swapping ROMS???

 

The ubergrom works simularly with GROM carts.. here's hoping they finish the rom flashing software portion soon

 

Greg

[+Ksarul]

Tursi analyzed the requirements to flash it and came to the conclusion that the bank switching circuitry will interfere with both the unlocking sequence and the programming sequence for the Flash chip--that guarantees that in-circuit programming is not possible with the boards. All signals are in place, but the rest of the board will fight it and really mess up the process. . .

[Tursi]

Not just the bank switching tech, but the multiplexer in the console as well.

 

Writing to flash chips requires the ability to make precise writes at specific addresses in an exact sequence to "unlock" them. Because every write turns into two 8-bit reads followed by two 8-bit writes, without hardware to specifically control this you can't program a flash chip in the console - the sequence will always be interrupted.