Difference in Disk System Models?

Started by mammal93, March 22, 2017, 12:13:55 pm

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mammal93

I ordered my fist Disk System like a week ago and it's one of the ones that's red or brown (sorry I'm color blind). I've noticed there are ones that are just black, and have seen people on here talk about writing capabilities of FDS. So I guess my question is; what is the difference between the models?

80sFREAK

Necrobump  ;D

I know about two revisions of RAM adaptor PCB. Earlier WRAM comes in 4*16K 4bit IC's and later variety have one WRAM chip only.
No idea about revisions of 2C33 and if there is any difference in BIOS
I don't buy, sell or trade at moment.
But my question is how hackers at that time were able to hack those games?(c)krzy

zmaster18

I've opened hundreds of Disk Systems, here are ALL the revision types for each part:

Power Board

-FMD-01 (fully write capable)
-FMD-02 (fully write capable, unless extra protection board is attached)
-FMD-03 (fully write capable, unless extra protection board is attached)
-FMD-04 (write protected)
-FMD-05 (write protected)

RAM Adapters

FMR-01 (smooth plastic version, glitchy sprite issue happens on this kind)
FMR-02 (smooth plastic version, glitchy sprite issue happens on this kind)
FMR-03 (matte plastic)
FMR-04 (matte plastic)

Drives:

7201 - (fully write capable)
3201 - (write protection)

Disk Systems are made of a combination of these 3 different kinds of components.

As for a black Disk System, there is no such thing. Perhaps you saw a painted one? It only comes in dark red.