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avatar_andymccall

Failed upper ROM with Dandinator Mini CPC on a 6128

Started by andymccall, 14:19, 05 July 24

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andymccall

Hi,

I'm restoring an Amstrad CPC 6128 and after swapping the memory everything seems to be working however when I run the Amstrad Diagnostics v1.2L that's included with the Dandinator Mini CPC I'm getting a failed upper ROM test.

I don't think it has failed as everything seems to be working great.

Does anyone know why I'd get this failure?

Thanks,

Andy

McArti0

Quote from: andymccall on 14:19, 05 July 24I don't think it has failed as everything seems to be working great.

Maybe you haven't validated all BASIC 1.1 commands. 
You should check the contents of the BASIC ROM and compare it with that in the emulators.
CPC 6128, Whole 6128 and Only 6128, with .....
NewPAL v3 for use all 128kB RAM by CRTC as VRAM
TYPICAL :) TV Funai 22FL532/10 with VGA-RGB-in.

eto

Quote from: andymccall on 14:19, 05 July 24Does anyone know why I'd get this failure?
You mean a wrong checksum check for AMSDOS? That's almost normal. I think I only had it once that the check was successful and several times that it gave me an error although the CPC was working perfectly fine. Not sure if the checksum is not calculated correctly always or if there are slightly different AMSDOS versions.

SerErris

You should use Version 1.3
" Fixed upper ROM detection that was failing in some cases."

https://github.com/llopis/amstrad-diagnostics/releases/tag/v1.3
Proud owner of 2 Schneider CPC 464, 1 Schneider CPC 6128, GT65 and lots of books
Still learning all the details on how things work.

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