So I’m starting to make some progress here, but I still have some troubles with my expansion board prototype. For the first time, the initial exec-rom-based check passed, and the memory auto-configured. This...
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Amiga Guru Meditation number 00000003.00C06560
Found a bad flip/flip replaced it, and now I’m on my way. The amiga appears to be getting past the initial boot stages including the ram memory checks! I see the blue screen, and the disk drives starts loading...
Finished wiring of the prototype, hooked it up
So I finished cabling up the solderless breadboard, and after checking connections, and checking pwr and gnd, I plugged it into the amiga. The amiga boots, which is a good sign, but then it never recognizes the memory. ...
ISSI memory chip mounted
So I can’t believe how freakin’ tiny those pins are coming off the memory chip. The pads on the surfboard were huge by comparison. I actually thought there was a manufacturing defect on the memory chip and...
Parts ordered for the A501 replacement card
I placed an order yesterday for some prototyping parts to get this project off the ground. Some of the key parts are: ISSI 256kx16 SRAM chips. IC SRAM 4MBIT 25NS 44TSOP A surfboard to do 44-pin TSOP II to DIP. Wish me...
