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by kodak80
Sun Dec 01, 2019 1:45 am
Forum: MONGREL H4 USER BUILDS
Topic: kodak80 H4 build (x2)
Replies: 48
Views: 1258

Re: kodak80 H4 build (x2)

Okay, first board is built apart from external connectors. Have a Falcon 4mb RAM board to fit and also a 4mb SIMM so I can test both options (not at the same time though). Still need to run through the fixes as well. 78600DE9-C0F9-41E6-B0FF-BB6C44E7BB38.jpeg F0EF307A-1886-45F3-9E12-82FCD68ACE67.jpeg...
by kodak80
Sat Nov 30, 2019 11:41 am
Forum: MONGREL H4 USER BUILDS
Topic: kodak80 H4 build (x2)
Replies: 48
Views: 1258

Re: kodak80 H4 build (x2)

It looks okay to me.
D4CCD9BD-002D-428D-93A9-06A9E047C092.jpeg
D4CCD9BD-002D-428D-93A9-06A9E047C092.jpeg (248.02 KiB) Viewed 108 times
by kodak80
Sat Nov 30, 2019 5:31 am
Forum: MONGREL H4 USER BUILDS
Topic: kodak80 H4 build (x2)
Replies: 48
Views: 1258

Re: kodak80 H4 build (x2)

U2 (SN74LVC1G11DBVR) IC in place. Managed to lose one on the floor and it is so small I could not find it!

I think that is all SMD components now on both my boards including resistors and capacitors. Unless I have missed some?

CB40C0D2-21D9-4470-83C7-3C389E5460AC.jpeg
CB40C0D2-21D9-4470-83C7-3C389E5460AC.jpeg (296.23 KiB) Viewed 257 times
by kodak80
Sat Nov 30, 2019 1:51 am
Forum: MONGREL H4 USER BUILDS
Topic: kodak80 H4 build (x2)
Replies: 48
Views: 1258

Re: kodak80 H4 build (x2)

U$30 (labelled on board as OSC1) in place.
F8397E25-E883-477A-89F0-7BF70A6A4B8C.jpeg
F8397E25-E883-477A-89F0-7BF70A6A4B8C.jpeg (271.28 KiB) Viewed 261 times
by kodak80
Sat Nov 30, 2019 1:25 am
Forum: MONGREL H4 USER BUILDS
Topic: kodak80 H4 build (x2)
Replies: 48
Views: 1258

Re: kodak80 H4 build (x2)

U3, U4 and U5 MC74AC157DG IC in place.
B33CE668-F86E-41C9-A153-12219F3A2ACC.jpeg
B33CE668-F86E-41C9-A153-12219F3A2ACC.jpeg (402.45 KiB) Viewed 266 times
by kodak80
Sat Nov 30, 2019 12:44 am
Forum: MONGREL H4 USER BUILDS
Topic: kodak80 H4 build (x2)
Replies: 48
Views: 1258

Re: kodak80 H4 build (x2)

U$6 (Reset) IC and IC3 (DAC) IC both in place.
15F4033F-5CE1-4E26-AC94-BECF43CA3711.jpeg
15F4033F-5CE1-4E26-AC94-BECF43CA3711.jpeg (468.32 KiB) Viewed 269 times
6FBDB6A5-8164-446D-8EB4-4B81077D4568.jpeg
6FBDB6A5-8164-446D-8EB4-4B81077D4568.jpeg (216.37 KiB) Viewed 269 times
by kodak80
Thu Nov 28, 2019 9:53 pm
Forum: MONGREL H4 USER BUILDS
Topic: kodak80 H4 build (x2)
Replies: 48
Views: 1258

Re: kodak80 H4 build (x2)

5 boards have arrived safely in AU. Many thanks to @exxos. 2 are mine, the other 3 are being passed onto a couple members of our local Atari group. We are all excited to be involved in this project. :D
IMG_4107.jpg
IMG_4107.jpg (464.77 KiB) Viewed 307 times
IMG_4106.jpg
IMG_4106.jpg (458.15 KiB) Viewed 307 times
by kodak80
Sun Nov 24, 2019 8:52 pm
Forum: MONGREL H4 USER BUILDS
Topic: kodak80 H4 build (x2)
Replies: 48
Views: 1258

Re: kodak80 H4 build (x2)

OK, I have stripped a few ST boards now so have the Atari chips and connectors. I have also ordered components from Mouser AU and other places so should have all BOM components in hand. Boards are in the post on their way to AU so have to wait now... I am avidly watching the builds under way at the ...
by kodak80
Sun Nov 24, 2019 8:47 pm
Forum: MONGREL H4 USER BUILDS
Topic: derkom's attempt
Replies: 143
Views: 2569

Re: derkom's attempt

A question about QG1 ("CRYSTAL 32MHz"): I have a 32.00000 MHz oscillator in DIP-14 package, but I notice the link to @exxos's store is for a 32.084988 MHz unit. What's the difference going to cause here? Is my 32 MHz appropriate? I asked the same question here: https://www.exxoshost.co.uk/forum/vie...
by kodak80
Sun Nov 24, 2019 8:45 pm
Forum: MONGREL H4 USER BUILDS
Topic: Icky's H4 Mongrel edition build x 2
Replies: 71
Views: 1973

Re: Icky's H4 Mongrel edition build x 2

Yes, waiting for delivery and will be joining the club once the boards arrive. :D

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