I'd made some assumptions of the Exxos board layout, mainly only asking the question if the diagnostic image was original or a new test software was wrote. Since it was original, went with that info.
Inside a Falcon diagnostic cart, and replacement boards available via Wizztronics, figured it wouldn't be difficult discovering the Exxos switch position setting.
But honestly, just wanted to get away from building or adding a PLCC adapter, not concerned with the actual purpose and function of the Exxos board. That ROM will be pulled anyway.
As the ROMS in the Atari Falcon diagnostic, as a pair, are 8x64K-512k, and knowing the actual addressable space for the ROM port is 128k, assumed when a 128 (2x64, HI/LO assuming, something to learn here using a PLCC) image is wrote to a ROM, regardless of its size (ie, 1024 PLCC), it will appear to the cartridge port as 128k address space regardless of size because of the jumper settings.
Writing this, your point about his/possible 65k setting makes sense. Unless the Exxos board differs from the standard Atari board (other than bells and whistles), with the silkscreen info on the boards I have should be able to decipher the settings.
Unless I'm completely missing the point
Hehe, a 512K ROM port.
Would of outpaced Amiga sales with that capability
- Cartridge ROM board
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