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Results tagged with hardware-mods
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user 6659
For questions about modifications to retro hardware.
24
votes
Accepted
Can a 16K computer be upgraded to 64K?
It all depends on the computer to be modified and its RAM system. For now, let's focus on the pure RAM expansion issue and drop the part about bank switching; as this is completely machine-dependent, …
- 236k
151
votes
Why did some early CPUs use external math chips?
Simple: Complexity.
A 8088 had about 29,000 transistor functions, while an 8087 with 45,000 is almost double that. Integrating the FPU within the CPU would have made it three times as big, putting pr …
- 236k
7
votes
Extending C128D Keyboard cable
I think it may be as easy as connecting male pins from one side to corresponding female pins on the other side,
Exactly that.
but need reassurance please. Would be shame to blow something up.
For …
- 236k
8
votes
Accepted
What is the purpose of ROM switcher mods in CDTV
I've seen a lot of information on CDTV ROM switchers, but it is still unclear to me what is the actual purpose of it.
The CDTV is essentially an Amiga 500 sans keyboard and floppy but with CD an …
- 236k
3
votes
How to build an ATA controller for the AT bus?
How to build an ATA controller for the AT bus?
You can't, as there isn't any.
You want to connect IDE-Drives, right? IDE stands for Integrated Device Electronics. Which simply means that the full ho …
- 236k
20
votes
Replacing 80286 with 68000
Most obvious question first: why not puting itn on a ISA Card and take over the bus instead? Given, there would be still some work to be done after asking for DMA and pulling /MASTER, but way less tha …
- 236k