RE: C128 diagnostic test cartridge

ncoplin_at_orbeng.com
Date: 2002-06-10 05:22:01

Hi Nicolas,

>Did anyone ever see a device like this? The seller told me that a friend of
>his probably brought it from the USA, which might explain why the test
program
>fails on my PAL 128D, but runs fine on my NTSC C128. For obvious reasons
this
>cartridge will not fit any 128DCR. 

>http://people.freenet.de/x1541/325099-01.BIN

I have never seen a diag cart for the C128. Do you know what it tests for
which doesn't rely on the cables /dongles? Most of the ports would be
testable with a C64 diag kit, I'm wondering whether the EPROM is useful for
testing C128 functions such as the extra RAM, MMU, VDC etc. Do you know
where the EPROM maps to and the activation mode (I really don't know much
about these modes on the C128, but assume it is treated as external ROM with
GAME/EXROM now as outputs rather than inputs?)

What do you suspect the NTSC vs PAL quirk is?

Regards, 
Nick


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