PhilC's H4 Mongrel edition build x 3

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

Post by PhilC » Fri Nov 29, 2019 10:37 pm

:clown: @Icky
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Re: PhilC's H4 Mongrel edition build x 3

Post by exxos » Fri Nov 29, 2019 10:48 pm

Icky wrote:
Fri Nov 29, 2019 10:30 pm
exxos wrote:
Fri Nov 29, 2019 10:06 pm
747 is a op-amp...
Or a jumbo jet. :sorry: I just couldn’t resist.
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Re: PhilC's H4 Mongrel edition build x 3

Post by PaulJ » Fri Nov 29, 2019 10:50 pm

Phil, I was just going to point out your perpendicular reset chip but I see Dog beat me to it. Hey maybe the op amp gives you a 90 degree virtual rotation. :) :) :)

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

Post by PhilC » Fri Nov 29, 2019 10:55 pm

PaulJ wrote:
Fri Nov 29, 2019 10:50 pm
Phil, I was just going to point out your perpendicular reset chip but I see Dog beat me to it. Hey maybe the op amp gives you a 90 degree virtual rotation. :) :) :)
You never know Paul, it might. It didnt give me any magic black smoke yet.
If it ain't broke, test it to Destruction.

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Re: PhilC's H4 Mongrel edition build x 3

Post by Icky » Fri Nov 29, 2019 11:17 pm

@exxos and @PhilC you have taken me down with my own emoji :)

Nice to see the addition of the :clown:

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Re: PhilC's H4 Mongrel edition build x 3

Post by PaulJ » Sat Nov 30, 2019 2:23 pm

PhilC wrote:
Fri Nov 29, 2019 9:49 pm
Thanks @DoG
Sods law I got it the wrong way round then
Phil, speaking of the wrong way around you should take a gander at cr16... believe you may have put it in backwards.

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Re: PhilC's H4 Mongrel edition build x 3

Post by PhilC » Sat Nov 30, 2019 2:27 pm

Thanks Paul, I'd got a lot backwards but haven't checked cr16 yet.

Actually just looked, you are right. I really do need to get my eyes tested. :oops:
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 » Sun Dec 01, 2019 9:57 pm

Working steadily away on my H4s when time allows.

It turns out I dont quite have enough parts to do all 3 but should easily get 2 done.

My second one is going to use SMT glue, mmu and a simm socket.

Top tip for everyone building their boards, it's almost essential you solder in the rs232 socket and cart port. I'd also recommend that you obtain a copy of Diagrom as this may kickstart your machine into life before the diag cart will.
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 2:53 pm

@PhilC you're the master of component alchemy... :pullhair: Is there a chip that I can insert backwards or maybe perpendicular to that socket that will mimic a SN74LS07? Hopefully you will have something for me. :mrgreen:

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Re: PhilC's H4 Mongrel edition build x 3

Post by PhilC » Mon Dec 02, 2019 3:31 pm

@PaulJ believe me, I was looking for one myself. Might be worth you chrvkomg the datasheet, as there are a number of ships in this series.

Plugging it in sideways does sound like an interesting solution though.
If it ain't broke, test it to Destruction.

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