IngoQs attempt at messing up the H4

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PaulJ
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Re: IngoQs attempt at messing up the H4

Post by PaulJ »

IngoQ wrote: Fri Jan 03, 2020 1:27 pm My back is getting better, so I here is some progress:

All sockets in place, only some of the resistors are missing, and then on to the fixes. I'm positive I get it finished this year :mrgreen:
I believe your battery holder is in backwards. Also don't forget r908 as I did.. gives you 20 bombs.
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IngoQ
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Re: IngoQs attempt at messing up the H4

Post by IngoQ »

PaulJ wrote: Fri Jan 03, 2020 2:13 pm I believe your battery holder is in backwards.
Thanks, corrected.
PaulJ wrote: Fri Jan 03, 2020 2:13 pm Also don't forget r908 as I did
Already fitted, thanks again :)

All parts are now soldered in and on, at least my list has everything striked off. Will now clean the rear (easier, when there are no bodge wires) and then apply the missing patches.
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Ingo :geek:

| Atari 1040STE@32MHz | Amiga 1200 (ACA1220) | Atari 800XL (U1MB, SIDE2) | Atari 130XL (Sophia DVI) | C64 (1541 Ultimate II, Rev3 RFMod Replacement) | TI 99/4A (F18A, 32k, FlashROM 99) | Sinclair ZX Spectrum 128 (Stereo, DivMMC) | Amstrad CPC664 (512k, M4 Wifi) | ... |
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Re: IngoQs attempt at messing up the H4

Post by exxos »

Thee are 2 bodge wires ;) plus a bodge resistor :)
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IngoQ
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Re: IngoQs attempt at messing up the H4

Post by IngoQ »

exxos wrote: Sat Jan 04, 2020 2:07 pm Thee are 2 bodge wires ;) plus a bodge resistor :)
I counted 3 :-P DTACK, SIMM and MAX238 ;)

And here they are:
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And in addition: The DMA workaround:
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RGB next, lastly the ICs and then the moment of truth... but playtime for today is over :)
Ingo :geek:

| Atari 1040STE@32MHz | Amiga 1200 (ACA1220) | Atari 800XL (U1MB, SIDE2) | Atari 130XL (Sophia DVI) | C64 (1541 Ultimate II, Rev3 RFMod Replacement) | TI 99/4A (F18A, 32k, FlashROM 99) | Sinclair ZX Spectrum 128 (Stereo, DivMMC) | Amstrad CPC664 (512k, M4 Wifi) | ... |
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DoG
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Re: IngoQs attempt at messing up the H4

Post by DoG »

One wire to many on the buffer bypass for HDD. You need to remove the leftmost wire.
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IngoQ
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Re: IngoQs attempt at messing up the H4

Post by IngoQ »

Yep, thanks, already found that one.
Ingo :geek:

| Atari 1040STE@32MHz | Amiga 1200 (ACA1220) | Atari 800XL (U1MB, SIDE2) | Atari 130XL (Sophia DVI) | C64 (1541 Ultimate II, Rev3 RFMod Replacement) | TI 99/4A (F18A, 32k, FlashROM 99) | Sinclair ZX Spectrum 128 (Stereo, DivMMC) | Amstrad CPC664 (512k, M4 Wifi) | ... |
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IngoQ
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Re: IngoQs attempt at messing up the H4

Post by IngoQ »

Okay, I believe I am done:
20200105_190115.jpg
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Sadly no time anymore for a test run, will have to wait a bit... And I have to admit, I am a little scared ;)
Ingo :geek:

| Atari 1040STE@32MHz | Amiga 1200 (ACA1220) | Atari 800XL (U1MB, SIDE2) | Atari 130XL (Sophia DVI) | C64 (1541 Ultimate II, Rev3 RFMod Replacement) | TI 99/4A (F18A, 32k, FlashROM 99) | Sinclair ZX Spectrum 128 (Stereo, DivMMC) | Amstrad CPC664 (512k, M4 Wifi) | ... |
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PaulJ
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Re: IngoQs attempt at messing up the H4

Post by PaulJ »

IngoQ wrote: Sun Jan 05, 2020 6:05 pm Sadly no time anymore for a test run, will have to wait a bit... And I have to admit, I am a little scared ;)
Looking good. :thumbup: When ya get time let us know how power went. :bravo:
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IngoQ
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Re: IngoQs attempt at messing up the H4

Post by IngoQ »

DSC_0027.JPG
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It's alive :mrgreen:

Haven't fully tested it because of a lack of working floppy drives, but at least got it to run GB6. Seems quite stable to me, and no complains about the video quality either.

The DAC is getting quite hot, is that normal?
Ingo :geek:

| Atari 1040STE@32MHz | Amiga 1200 (ACA1220) | Atari 800XL (U1MB, SIDE2) | Atari 130XL (Sophia DVI) | C64 (1541 Ultimate II, Rev3 RFMod Replacement) | TI 99/4A (F18A, 32k, FlashROM 99) | Sinclair ZX Spectrum 128 (Stereo, DivMMC) | Amstrad CPC664 (512k, M4 Wifi) | ... |
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Icky
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Re: IngoQs attempt at messing up the H4

Post by Icky »

IngoQ wrote: Sat Jan 11, 2020 11:12 am It's alive :mrgreen:

Haven't fully tested it because of a lack of working floppy drives, but at least got it to run GB6. Seems quite stable to me, and no complains about the video quality either.

The DAC is getting quite hot, is that normal?
Great work @IngoQ, another H4 is born.

Yes the DAC does get hot.
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