In the ROM Emulator project, back in the day, we were translating Type 3 Postscript Fonts and Postscript Exports from CorelDraw into the host system's native, Multiple ROM based, Font Cartridge Format.
I the formatting, there were Blocks of Data mapped according to information on a tiny ROM present on the Cartridges for some reason or other. It was probably due to the different sizes and combinations of the ROMs used on the Font Cartridges according to specific storage needs.
Could your equivocal ROM Dump results be the result of such mapping being done from information present within the, lower level, socketed PLCC ROM pair? This mapping could have changed several times over the course of the PEx Board and ROM development.
Dunno, just thought I'd ask . . . :?:
I the formatting, there were Blocks of Data mapped according to information on a tiny ROM present on the Cartridges for some reason or other. It was probably due to the different sizes and combinations of the ROMs used on the Font Cartridges according to specific storage needs.
Could your equivocal ROM Dump results be the result of such mapping being done from information present within the, lower level, socketed PLCC ROM pair? This mapping could have changed several times over the course of the PEx Board and ROM development.
Dunno, just thought I'd ask . . . :?: