Search found 209 matches

by hlide
Sun Feb 24, 2019 11:31 pm
Forum: Hardware
Topic: Still faulty 80K
Replies: 20
Views: 1510

Re: Still faulty 80K

So the situation is you have no screen activity and no sound activity. Sounds like the CPU is not running. The more I think, the more I believe we need an arduino to take the Z80 bus ownership and be able to access RAM, ROM, VRAM and Intel chips to make some tests and diagnostics. - Monitor ROM ($00...
by hlide
Sun Feb 24, 2019 9:51 pm
Forum: Hardware
Topic: Still faulty 80K
Replies: 20
Views: 1510

Re: Still faulty 80K

6502!? you mean a Z80, right?
by hlide
Sun Feb 24, 2019 7:42 pm
Forum: Hardware
Topic: Still faulty 80K
Replies: 20
Views: 1510

Re: Still faulty 80K

CPU and Monitor ROM?
by hlide
Sat Feb 23, 2019 11:31 am
Forum: Hardware
Topic: Mz700 repair project
Replies: 34
Views: 695

Re: Mz700 repair project

That's okay. Especially if you're speaking about how to repair an MZ-700, so go on.
by hlide
Sun Feb 17, 2019 10:03 am
Forum: Emulation
Topic: EmuZ-80
Replies: 10
Views: 1696

Re: EmuZ-80

Sharpals wrote:
Sun Feb 17, 2019 7:00 am
no ... my is the Multisystem emu ....
Complete name and link of your project? I don't see what it is.
by hlide
Sat Feb 16, 2019 12:55 pm
Forum: Emulation
Topic: EmuZ-80
Replies: 10
Views: 1696

Re: EmuZ-80

Many people helped me, to collect information about the machines and i wired them into the emu. The new is MZ80K color from SUC-UK !! ... But if you like, you can help me to modify one 80A core into singlelinemode and reconfigurable CTC. Hi Sharpals, it is not very clear whether you are connected t...
by hlide
Wed Feb 13, 2019 3:56 pm
Forum: Hardware
Topic: Mz700 repair project
Replies: 34
Views: 695

Re: Mz700 repair project

On my first MZ-700, some keys were not responsive. I had to unscrew the keyboard to access the card stock where the circuit is embedded. I clean it with alcohol and remount the keyboard: the unresponsive keys are responsive now.
by hlide
Tue Feb 12, 2019 1:01 am
Forum: Hardware
Topic: Mz700 repair project
Replies: 34
Views: 695

Re: Mz700 repair project

1) Mitsubishi ? yes, it is usual. Not all components are labelled SHARP. 2) PSU ? C1 and C2 are just filter caps and are not necessary for MZ-700 to work. They were used so your neighbour's RF TV was not noisy due to interference. But those caps do smell bad when they are exploded, so just remove th...
by hlide
Sun Feb 10, 2019 9:36 pm
Forum: Hardware
Topic: MZ-SD2CMT - correct wiring?
Replies: 12
Views: 593

Re: MZ-SD2CMT - correct wiring?

This afternoon I tried again. Checked my wiring - it looks ok. Marcus Lausch tried your configuration and it works perfect for him. So far, there are two people who has a working unit. I start to think your firmware is probably not working as expected as I remembered you had issues to build one tha...