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Author Topic: Some questions for the PCMCIA gurus  (Read 1796 times)

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Offline alexh

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Re: Some questions for the PCMCIA gurus
« on: March 25, 2009, 09:43:22 AM »
1) All PCMCIA adapter boards are pretty much the same. It's the CF cards which make them problematic. Get the cheapest PCMCIA->CF adapter you can find and the latest CFD and FAT95 software from Aminet

2) Yes you cannot have 8Meg of trapdoor RAM (no accelerator) and use the PCMCIA slot with the CFD driver

3) The A600's 68000 and the A1200's 68EC020 both have a 24-bit address bus. This limits them to a total memory space of 16Mbytes (some of which is taken up by ChipRAM, KS-ROM, Registers etc.) leaving only 8Mbytes for PCMCIA and FastRAM.

Most accelerators the 68030 chip has a 32-bit address bus (giving a total memory space of 4GByte) and it can allocate FastRAM above 24-bits. Thus leaving room for the PCMCIA within the 24-bit address space.