Search found 169 matches

by DoG
Sun Dec 01, 2019 4:38 pm
Forum: MEMBER BLOGS
Topic: Looks like I'll be getting a Mega ST4 soon
Replies: 197
Views: 11717

Re: Looks like I'll be getting a Mega ST4 soon

If you connect computer thru computer, you will need a null modem cable. There is a few lines that crossed in the cable. Like transmit-receive, handshake and one more. But there are different kind I suppose.
by DoG
Sat Nov 30, 2019 3:41 pm
Forum: PSU (power supplies)
Topic: Mitsumi 68-4242a
Replies: 10
Views: 600

Re: Mitsumi 68-4242a

What model number does it say on the sticker underneath the metal stand the board screws into?

You should be able to find PSU schematics on https://docs.dev-docs.org/ after that.
by DoG
Fri Nov 29, 2019 9:47 pm
Forum: MONGREL H4 USER BUILDS
Topic: PhilC's H4 Mongrel edition build x 3
Replies: 178
Views: 7913

Re: PhilC's H4 Mongrel edition build x 3

PhilC wrote:
Fri Nov 29, 2019 9:37 pm
which way round does the reset chip go?
The pin that is larger/wider is ground (pin 1) and this is the pad on the bottom/left on the board (closest to R13).
by DoG
Fri Nov 29, 2019 7:04 pm
Forum: CHAT FORUM
Topic: H4 inspection team
Replies: 6
Views: 339

Re: H4 inspection team

(S)he seems confused on which part to start start soldering.
by DoG
Tue Nov 26, 2019 6:36 pm
Forum: MONGREL H4 USER BUILDS
Topic: DoG's Hx Mongrel build attempt
Replies: 39
Views: 2087

Re: DoG's Hx Mongrel build attempt

exxos wrote:
Tue Nov 26, 2019 6:10 pm
I never sent any optos out, only the DAC's. With so many boxes of junk everywhere I just never found them.
Aah. No worries!
by DoG
Tue Nov 26, 2019 5:54 pm
Forum: MONGREL H4 USER BUILDS
Topic: DoG's Hx Mongrel build attempt
Replies: 39
Views: 2087

Re: DoG's Hx Mongrel build attemt

The TT keyboard isn't stiffer, it's FAR lighter touch, more similar to current keyboards. Not surprising as it's made by Mitsumi who made/make cheap PC keyboards for a living. Ok, so wrong word to explain it. More "tactile" then. Either way, I have fitted those pink rubber domes and screwed it toge...
by DoG
Sun Nov 24, 2019 4:13 pm
Forum: MONGREL H4 USER BUILDS
Topic: Icky's H4 Mongrel edition build x 2
Replies: 88
Views: 4803

Re: Icky's H4 Mongrel edition build x 2

PaulJ wrote:
Sun Nov 24, 2019 3:33 pm
...I will be using it on my boards if they ever show up. :(
I haven't got my board either yet so we can be sad together :(
by DoG
Sat Nov 23, 2019 10:04 am
Forum: INTRODUCE YOURSELF
Topic: Hello from abbotsford bc canada
Replies: 4
Views: 494

Re: Hello from abbotsford bc canada

Tomswork wrote:
Sat Nov 23, 2019 7:22 am
... my first question can a mega ste boot with 256 100 ns...
That will be 1Mb RAM and is normal for a computer from that era that not been upgraded. You can fit four 1Mb SIMM modules instead to get it to 4Mb. 30pin/no party.
by DoG
Mon Nov 18, 2019 10:03 pm
Forum: MONGREL H4 USER BUILDS
Topic: REV H1 information and interest
Replies: 123
Views: 11596

Re: REV H1 information and interest

Ooh. THAT looks really nice!
by DoG
Fri Nov 15, 2019 7:43 am
Forum: HARDWARE ISSUES
Topic: Wizztonics TOS206 upgrade issue - SOLVED
Replies: 40
Views: 1662

Re: Anyone have it? know it?

Do a RAM check on the diag cart. Does it say 'OK'?

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