PhilC's H4 Mongrel edition build x 3

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PaulJ
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Re: PhilC's H4 Mongrel edition build x 3

Post by PaulJ » Mon Dec 02, 2019 3:41 pm

@PhilC I'm surprised you don't have a magic solution for me. :cry: I guess my weakness here was having a lot of spares from the remake build and my ability to assume I had all the non-descript parts... Lots of 05, 06, etc used in the remake. Then Exxos slips in the 07 that totally passed me by.. :o If I could give up all these assumptions I would be miles ahead. :thumbup:

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Re: PhilC's H4 Mongrel edition build x 3

Post by PhilC » Mon Dec 02, 2019 3:42 pm

That was exactly my problem too Paul. You could always make an 07 with discrete components :D
If it ain't broke, test it to Destruction.

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Re: PhilC's H4 Mongrel edition build x 3

Post by PaulJ » Mon Dec 02, 2019 3:54 pm

Na.. not that desperate... believe I'll run all my plugin chips through the remake to insure they work, maybe give the board a good going over with the microscope to check for any irregularities. :)

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Re: PhilC's H4 Mongrel edition build x 3

Post by PhilC » Mon Dec 02, 2019 3:59 pm

Sounds like a plan to me Paul
If it ain't broke, test it to Destruction.

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Re: PhilC's H4 Mongrel edition build x 3

Post by PhilC » Wed Dec 04, 2019 10:32 pm

So the first of my three boards is now assembled and metered out all ok with the pullups etc but I've yet to get it to boot into Diagrom properly.

Having a quick look and it looks like I have a couple of issues with the address bus. So once I get time, as real life keeps getting in the way, I shall meter put all the address and data lines. No doubt I've forgot to solder something as usual :lol:

Btw, for my first board, I chose to go the plcc route for glue, mmu, etc but for the next board I'll mount the smt versions of those chips, so we can get a good test of all the possible assembly options.

I've also put both a simm socket and the falcon ram headers on this board but the next two are likely to be simm only affairs.

More to come soon.
(Wish I had an LA)
If it ain't broke, test it to Destruction.

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Re: PhilC's H4 Mongrel edition build x 3

Post by PaulJ » Wed Dec 04, 2019 11:30 pm

@PhilC ,you will be happy to know I didn't use any your magic smoke. :) I'm thinking of using your plan and try a SMT glue and emu on the second board which arrived today, thanks @exxos.

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Re: PhilC's H4 Mongrel edition build x 3

Post by PhilC » Thu Dec 05, 2019 2:52 pm

PaulJ wrote:
Wed Dec 04, 2019 11:30 pm
@PhilC ,you will be happy to know I didn't use any your magic smoke. :) I'm thinking of using your plan and try a SMT glue and emu on the second board which arrived today, thanks @exxos.
Oh I was only borrowing it from @rubber_jonnie anyway :lol:
If it ain't broke, test it to Destruction.

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Re: PhilC's H4 Mongrel edition build x 3

Post by PaulJ » Thu Dec 05, 2019 2:54 pm

PhilC wrote:
Thu Dec 05, 2019 2:52 pm
PaulJ wrote:
Wed Dec 04, 2019 11:30 pm
@PhilC ,you will be happy to know I didn't use any your magic smoke. :) I'm thinking of using your plan and try a SMT glue and emu on the second board which arrived today, thanks @exxos.
Oh I was only borrowing it from @rubber_jonnie anyway :lol:
I don't know if burnt skin produces magic smoke? :foldarms:

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Re: PhilC's H4 Mongrel edition build x 3

Post by exxos » Thu Dec 05, 2019 2:58 pm

PhilC wrote:
Thu Dec 05, 2019 2:52 pm
Oh I was only borrowing it from @rubber_jonnie anyway :lol:
I was thinking RJ may want to keep his fingers away from the DAC...
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: PhilC's H4 Mongrel edition build x 3

Post by rubber_jonnie » Thu Dec 05, 2019 4:07 pm

PhilC wrote:
Thu Dec 05, 2019 2:52 pm
PaulJ wrote:
Wed Dec 04, 2019 11:30 pm
@PhilC ,you will be happy to know I didn't use any your magic smoke. :) I'm thinking of using your plan and try a SMT glue and emu on the second board which arrived today, thanks @exxos.
Oh I was only borrowing it from @rubber_jonnie anyway :lol:
@PhilC

Dude, really!!

I'm not doing magic smoke ATM anyway, I'm just breaking stuff so it doesn't work at all :sigh:

Hence the saying "If it's broke, there's no magic smoke"
Collector of old Atari things:
800XL + Ape Warp mod, 2x 1010 cassette, 1050 + Happy mod, 65XE (128k) & XC12, SIO2SD, 2600jr, 7800 and Lynx II
Atari 520ST (1Meg) + Gotek, 1040STFM + Vortex ATOnce + Gotek, 1040STF long button floppy, 4160 STE with Gotek and ROM switcher, 4160STE with 32Mhz booster, ROM switcher and CosmosEx, not to mention various bare ST boards for testing including a PAK 68/2 :)
Plus the rest..
Amiga stuff, Mac stuff, Sinclair stuff etc...
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