NO free lunches here
IC4 is not needed for Ikaruga, as it's all 0xFF. The second half of the first 8MB block is NOT all 0's, and thus 'outside your skill level'
I checked the 27C322 and it's OK, also gave the soldered flash pieces an inspection under the microscope and they look ok.
Does anyone know how the checksums in rom-check are calculated? I much prefer to check a checksum, than to de-solder and verify stuff.
The little blue board is just an 1117 board I picked up from Ali, as it looks clean and is cheaper than anything I could bodge up myself, 1.69USD SHIPPED for 10 pcs
https://www.aliexpress.com/item/2PC...Power-Supply-Module-AMS1117-3/1893396039.html
IC4 is not needed for Ikaruga, as it's all 0xFF. The second half of the first 8MB block is NOT all 0's, and thus 'outside your skill level'
I checked the 27C322 and it's OK, also gave the soldered flash pieces an inspection under the microscope and they look ok.
Does anyone know how the checksums in rom-check are calculated? I much prefer to check a checksum, than to de-solder and verify stuff.
The little blue board is just an 1117 board I picked up from Ali, as it looks clean and is cheaper than anything I could bodge up myself, 1.69USD SHIPPED for 10 pcs
https://www.aliexpress.com/item/2PC...Power-Supply-Module-AMS1117-3/1893396039.html