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Results tagged with hardware-mods
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user 79
For questions about modifications to retro hardware.
12
votes
How does the 4MB mod for 8-bit Atari work?
Memory beyond 48 KB on 8-bit Ataris is all based on bank-switching, since the 6502 processor only has 16 address lines. The CPU can address 64 KB total, and that has to include ROM and memory-mapped I …
- 131k
39
votes
Why did some early CPUs use external math chips?
It seems to me there are a number of factors involved, some of which have been addressed in other answers:
design complexity
cost (which largely results from the complexity)
feature necessity
time-t …
- 131k
39
votes
Accepted
What modification is required from a PC floppy for use in Amiga?
The differences between PC floppy drives and Amiga floppy drives are as follows:
PC floppy drives normally answer to drive select 1 (DS1), internal Amiga drives answer to DS0
pin 34 on the connector …
- 131k