A full Spectrum of emotions

[rubber_jonnie]

Ok, well that's been a voyage of discovery.

I removed all the logic ICs on the spares board and tested the ICs. They all came back good. I fitted sockets and installed new and I still have issues...

So I reverted back to 16K only by removing the LS32 and 2 LS157s that are needed for the upper memory, still crashing when running diags, so I remove all of the upper memory, and 3 out of 8 ICs are bad.

Boy, so does it work? No, still crashy, so I hit the CPU with freeze spray, and suddenly it's stable. Damn, I need to replace the CPU then. Dammit.

So looks like a CPU swap is on the cards too.

Whilst it's cool I'll leave the tests cycling, see if it fails once the CPU gets warm again.

[HigashiJun]

May the CPU be the culprit...

[stephen_usher]

Which manufacter made the Z80? I've had lots of failures of SCS (?) made ones, including in the Acorn Z80 second processor.

[HigashiJun]

BTW, what do you plan to do to your Amstrad ?

I have a CPC 6128 (US version, 60 Hz), with a reset switch, an AMSDOS/PARADOS switch, an internal expansion port, a CRTC 1 (Batman Forever...) and a Gotek as FDD emulator.

As expansion cards, I have a 4 MB card (Aha - Take on me demo...), a Symbiface 3 and a V9990 Power Graph board.

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A nice machine with a lot of good games.

[stephen_usher]

I did my 6128 Gotek slightly differently, putting the active LED in the same location as on the original 3" drive.

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[rubber_jonnie]

Which manufacter made the Z80? I've had lots of failures of SCS (?) made ones, including in the Acorn Z80 second processor.

Both boards I have are Zilog Z80's, and it seem both have the M1 problem that prevents use with the DivMMC Future.

I've ordered a couple and some more sockets as I'm running out.

Definitely the CPU though, as when I came back after lunch it had crashed. I hit the CPU with freeze spray and power cycled and it started working again.

[rubber_jonnie]

BTW, what do you plan to do to your Amstrad ?

I have a CPC 6128 (US version, 60 Hz), with a reset switch, an AMSDOS/PARADOS switch, an internal expansion port, a CRTC 1 (Batman Forever...) and a Gotek as FDD emulator.

As expansion cards, I have a 4 MB card (Aha - Take on me demo...), a Symbiface 3 and a V9990 Power Graph board.


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A nice machine with a lot of good games.

As yet, just get familiar with it. I have an Aduitape so will see what games I can download to try it out.

[HigashiJun]

I did my 6128 Gotek slightly differently, putting the active LED in the same location as on the original 3" drive.

Good idea ! It looks really nice.

[HigashiJun]

As yet, just get familiar with it. I have an Aduitape so will see what games I can download to try it out.

Ok, so the "enhancing phase" is for later.

[rubber_jonnie]

As yet, just get familiar with it. I have an Aduitape so will see what games I can download to try it out.

Ok, so the "enhancing phase" is for later.

Indeed it is. I always look for something that allows for SD card storage of disk or tape images, so that'll be the way I go most likely.