Search found 27 matches

by Gortho
Thu Jun 11, 2020 5:41 pm
Forum: Hardware
Topic: MZ 80K repair project
Replies: 23
Views: 1183

Re: MZ 80K repair project

hlide wrote:
Thu Jun 11, 2020 10:44 am

Nope, DRAM chips DO also use +12V as -5V as well.

I know it because I had to replace them on my MZ80 K.

mz80kdram.jpg
Eh indeed, did not notice them on schematics. And forgot about those old drams ;)
by Gortho
Wed Jun 10, 2020 9:28 pm
Forum: Hardware
Topic: MZ 80K repair project
Replies: 23
Views: 1183

Re: MZ 80K repair project

If I look at the schematics correctly, fuse near cables you are talking about is F401, on the +12v rail. Did it blow *after* you removed it from mainboard? Because there is not much there to cause it when it's not connected to anything. That gunk is probably just kind of glue used during assembly/so...
by Gortho
Sat May 16, 2020 12:32 pm
Forum: Buy/sell
Topic: Looking for mz800 manuals
Replies: 1
Views: 383

Looking for mz800 manuals

Hi All,

All this talk about different manuals, reminded me that I need a set of manuals for my mz800. Possibly in English ;)
Does anyone have spare ones and is willing to part with them for a reasonable price?
by Gortho
Fri May 15, 2020 4:19 pm
Forum: Hardware
Topic: Color GAL5, color board for MZ80KC/1200
Replies: 34
Views: 3206

Re: Color GAL5, color board for MZ80KC/1200

You can't just leave it like that ;) The suspense is killing me, make and post those pictures please :D
by Gortho
Thu May 07, 2020 11:42 am
Forum: Hardware
Topic: Color GAL5, color board for MZ80KC/1200
Replies: 34
Views: 3206

Re: Color GAL5, color board for MZ80KC/1200

Maybe should you both check the first page of manual? The one with publisher, print date, revision and other info.Then it will be easier to compare ;)
by Gortho
Thu Apr 09, 2020 8:47 am
Forum: Hardware
Topic: MZ700 video problem
Replies: 19
Views: 1977

Re: MZ700 video problem

It's quite a challenge to find the culprit remotely ;) AndyR: Do you, by any chance, have logic analyzer/oscilloscope/something that could show you signals on some of those chips? Could help lots :) Anyway. Do you have anything else you can plug CPU to to verify it's working? It does not seem to be ...
by Gortho
Wed Apr 08, 2020 7:12 pm
Forum: Hardware
Topic: MZ700 video problem
Replies: 19
Views: 1977

Re: MZ700 video problem

No, when you remove the ROM it doesn't end with that kind of multicolored checkboard : I never saw that on a working MZ-700. It is not an issue with ROM. If you remove CPU, I also believe you won't get that. So if you have that issue with no ROM or CPU, there is definitely another issue elsewhere. ...
by Gortho
Tue Mar 31, 2020 10:44 am
Forum: Hardware
Topic: MZ700 video problem
Replies: 19
Views: 1977

Re: MZ700 video problem

Does it react to any input? key presses? Or it's completely dead?
by Gortho
Sat Dec 07, 2019 3:08 pm
Forum: Games
Topic: Is it real game ?
Replies: 4
Views: 1734

Re: Is it real game ?

That's how the game looks in reality:
https://www.youtube.com/watch?v=1BpV8cw2DC0

Looks much closer to abilities of real life MZ-700 :)
Not sure if stuttering is because of emulator of it is doing it on real hardware though.
by Gortho
Wed Nov 27, 2019 1:45 pm
Forum: Games
Topic: Sharptris - new game for MZ700
Replies: 5
Views: 2082

Re: Sharptris - new game for MZ700

Jo Even wrote:
Sun Nov 24, 2019 5:16 pm
I consider selling some copies on tape to finance this year's domain and server rent for sharpmz.org. Is there any interest in such a thing?
Probably depends on price. Lets say you have at least one interested person ;)