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Re: Icky's H4 Mongrel edition build x 2
Posted: 19 Apr 2020 10:37
by PhilC
I thought those mugs were for hot chocolate only? :lol:
My third board is half built towards being ready for the FPGA wtc.
Re: Icky's H4 Mongrel edition build x 2
Posted: 19 Apr 2020 11:01
by Icky
PhilC wrote: 19 Apr 2020 10:37
I thought those mugs were for hot chocolate only? :lol:
Other forms of liquid are suitable for the mugs :)
Just figuring out how best to make sure the HDI board and Amiga board fits.
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Re: Icky's H4 Mongrel edition build x 2
Posted: 19 Apr 2020 11:20
by PhilC
That's what I'd been waiting on before I built the rest
Re: Icky's H4 Mongrel edition build x 2
Posted: 19 Apr 2020 12:20
by Icky
Tracks cut under the DAC
https://www.exxosforum.co.uk/forum/viewt ... =10#p34227 but am contemplating that the DAC, RGB / Mono, Mono Gen and Composite Gen are not needed if the HDMI board works. Thus I can leave out a lot of components with most of them being SMT :)
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Re: Icky's H4 Mongrel edition build x 2
Posted: 19 Apr 2020 12:58
by Icky
SIMM socket will require a bit of a mod to be able to test with the Three Amigos + MAD 10 board -
https://www.exxosforum.co.uk/forum/viewt ... 237#p36237
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Re: Icky's H4 Mongrel edition build x 2
Posted: 19 Apr 2020 13:03
by exxos
Yeah some idiot wired it to GND assuming some idiot would try and fit a 16MB simm into it :)
Re: Icky's H4 Mongrel edition build x 2
Posted: 19 Apr 2020 13:09
by PhilC
Not guilty this time, I only have 4 and 8s.
Re: Icky's H4 Mongrel edition build x 2
Posted: 19 Apr 2020 13:15
by Icky
So bending the pin is not really an option as it still sits on the solder pad. Snipping the pin off will leave the square support metal which is cleaner. Don't snip the square support metal in two as the integrity of the SIMM socket pins will be comprimised. Will just need to place a small piece of insulation over the board hole. The MAD10 line can just be soldered to the square metal.
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Re: Icky's H4 Mongrel edition build x 2
Posted: 19 Apr 2020 20:02
by Icky
Well this has been fun today. The decision to cut out the video circuitry because of the HDMI FPGA Shifter board has saved a lot of time.
I have also gone a bit rouge on this build too. I am using SMT resistors and caps where possible (see R21 & R58 next to the 1772)
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Re: Icky's H4 Mongrel edition build x 2
Posted: 19 Apr 2020 20:10
by exxos
I still need to do my DMA bodge boards :roll: It makes me wonder if in years to come people are going to be asking what that little board is for, just like people keep on asking what the blitter bodge board is in the MEGA's etc :lol: