Search found 169 matches

by DoG
Sat Jan 04, 2020 6:42 pm
Forum: MONGREL H4 USER BUILDS
Topic: IngoQs attempt at messing up the H4
Replies: 58
Views: 4755

Re: IngoQs attempt at messing up the H4

One wire to many on the buffer bypass for HDD. You need to remove the leftmost wire.
by DoG
Sat Jan 04, 2020 6:38 pm
Forum: HARDWARE DISCUSSIONS
Topic: Gotek ST Trouble
Replies: 5
Views: 292

Re: Gotek ST Trouble

There are two different controller boards for the SF354. Which do you have? One have a few logic chip on it and the other one it's just a pcb with traces on it (and two relay). The one with logic chips on it won't work out of the box. The other one should work fine with double sided disks. The ribbo...
by DoG
Sun Dec 29, 2019 1:23 pm
Forum: MONGREL H4 USER BUILDS
Topic: DoG's Hx Mongrel build attempt
Replies: 39
Views: 2086

Re: DoG's Hx Mongrel build attempt

Looks like you got a bit or 2 in the red line somewhere not contacting. You were right about a bit missing. First I checked all my soldering and they seemed fine. So I measured all the stuff on the red side of shifter, DAC and mux. I found that pin 27 (R2) of the shifter didn't have contact with pi...
by DoG
Sat Dec 28, 2019 9:47 pm
Forum: MONGREL H4 USER BUILDS
Topic: DoG's Hx Mongrel build attempt
Replies: 39
Views: 2086

Re: DoG's Hx Mongrel build attempt

...When will power up be :)? Now! Well, it's working... but I got no floppy. I also got very faint red or missing red in display. Have to look into that tomorrow. No floppy.jpg No red.jpg Audio is working and Blitter is working. Got 4Mb of ram and it's working. HDD/satandisk is working. External po...
by DoG
Sat Dec 28, 2019 5:37 pm
Forum: MONGREL H4 USER BUILDS
Topic: DoG's Hx Mongrel build attempt
Replies: 39
Views: 2086

Re: DoG's Hx Mongrel build attempt

derkom wrote:
Sat Dec 28, 2019 4:55 pm
Looks like your keyboard connector is on backwards. Missing pin should be second from the front, not second from the rear.
Thank you! I just held up the connector from the keyboard. Didn't check that at all. I even have a original motherboard beside me. Clumsy.
by DoG
Sat Dec 28, 2019 4:42 pm
Forum: MONGREL H4 USER BUILDS
Topic: DoG's Hx Mongrel build attempt
Replies: 39
Views: 2086

Re: DoG's Hx Mongrel build attempt

...and the jumpers of course.
by DoG
Sat Dec 28, 2019 4:41 pm
Forum: MONGREL H4 USER BUILDS
Topic: DoG's Hx Mongrel build attempt
Replies: 39
Views: 2086

Re: DoG's Hx Mongrel build attempt

Mostly done! Time to put in the IC in their sockets.
Done without IC.jpg
Done without IC.jpg (132.61 KiB) Viewed 254 times
by DoG
Fri Dec 27, 2019 6:38 pm
Forum: MONGREL H4 USER BUILDS
Topic: DoG's Hx Mongrel build attempt
Replies: 39
Views: 2086

Re: DoG's Hx Mongrel build attempt

I finally got some time to do some work on the board. I think I got most of the small itsy bitsy components soldered in now. I maybe do jumper pins next and then sockets. And ports and fixes of course. I lifted the 3 pins on the DAC. I'm going to leave them unattached to anything and see what the di...
by DoG
Sun Dec 22, 2019 3:55 pm
Forum: CHAT FORUM
Topic: What are you buying yourself for Christmas?
Replies: 49
Views: 3445

Re: What are you buying yourself for Christmas?

There is a bit of fiddle with the cleaning process. Sometimes mine gets solder stuck in the pipe. And the pipe cleaning thingy can't clean it since the the solder gets cold. So have to heat it upp with a soldering iron from inside. You will notice when it start getting a bit bad at sucking. Start cl...
by DoG
Thu Dec 12, 2019 7:41 am
Forum: HARDWARE DISCUSSIONS
Topic: Atari mega ste help
Replies: 31
Views: 2799

Re: Atari mega ste help

The socket looks fine to me on the pic provided in previous post.

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