It's so pretty! <3 <3 <3 <3
Also, dead as a Brexit deal.
Oh well, it would be no fun if it was too simple I might've skipped something I shouldn't.
Troed's H4 build
Re: Troed's H4 build
Done all the patches & fixes ?
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: Troed's H4 build
I think so, at least those relevant to see it boot (e.g. - I've cut the trace to the serial port but not soldered the patch wire).
The photo above still lacked the final resistors by the expansion sockets - those are also done.
I'm dead tired after having slept very little a few nights so I'll stop for tonight and look over things tomorrow. Should be something simple. Although there is one possibility: I came into the workshop one morning and found the PCB on the floor. The kittens had jumped up and managed to push it over the edge of the workbench ... flat down onto stone tiling.
/Troed
Re: Troed's H4 build
@troed looks likeca good job.
From the photo the only bit I can see wrong is that you have a blitter but also have the jumpers made. Blotter = no jumpers.
From the photo the only bit I can see wrong is that you have a blitter but also have the jumpers made. Blotter = no jumpers.
If it ain't broke, test it to Destruction.
Re: Troed's H4 build
- Nice.
I think my first H4 not booting was down to a solder bridge on U2 that I could hardly see.
I think my first H4 not booting was down to a solder bridge on U2 that I could hardly see.
Re: Troed's H4 build
I think you should have the jumper between the Blitter socket and the cpu OPENED as well if you have the blitter installed.
edit: Ah just read PhilC's comment...but yeah open both jumpers around the Blitter.
edit: Ah just read PhilC's comment...but yeah open both jumpers around the Blitter.
Re: Troed's H4 build
Ah, thanks. Both jumpers now open but same same. Tomorrow will be microscope and LA day.
/Troed
/Troed
- rubber_jonnie
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Re: Troed's H4 build
So what exactly happens on boot? Black screen? White screen? White border with black centre?
Do you have exxos IDE adapter at all? I had a problem with U2 and got a white screen, so I popped in the IDE adapter as it has it's own CPU and ROM all together, and mine booted ok, so I knew the problem was the LS11.
Might be worth getting at least one expansion socket installed for things like the IDE board and I'd definitely suggest getting the cartridge port and serial port up and running so you can potentially use a diag cart.
Do you have exxos IDE adapter at all? I had a problem with U2 and got a white screen, so I popped in the IDE adapter as it has it's own CPU and ROM all together, and mine booted ok, so I knew the problem was the LS11.
Might be worth getting at least one expansion socket installed for things like the IDE board and I'd definitely suggest getting the cartridge port and serial port up and running so you can potentially use a diag cart.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
Re: Troed's H4 build
Well, the only video circuitry I have is the HDMI board. It lights up (red led) and I _think_ it's just then sending empty frames to the monitor. What this would mean in ST analog output I don't know.rubber_jonnie wrote: ↑Tue Jun 23, 2020 10:14 am So what exactly happens on boot? Black screen? White screen? White border with black centre?
I've tried replacing it with a regular Shifter and then connecting up a floppy to see if that boots (audibly), but it doesn't.
I'm not too worried. When I have time I'll just look through the boot process with the LA connected up. I've done a visual inspection and measured the SMT components for bridges but that seems fine.
regards,
Troed
- rubber_jonnie
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Re: Troed's H4 build
I must admit, I was very envious of the Shifter board, I want one for my second H4, but the lack of visual output for diagnostics does worry me a bit, because the lo-res output is pretty helpful from a diagnostics point of view.troed wrote: ↑Tue Jun 23, 2020 10:33 amWell, the only video circuitry I have is the HDMI board. It lights up (red led) and I _think_ it's just then sending empty frames to the monitor. What this would mean in ST analog output I don't know.rubber_jonnie wrote: ↑Tue Jun 23, 2020 10:14 am So what exactly happens on boot? Black screen? White screen? White border with black centre?
I've tried replacing it with a regular Shifter and then connecting up a floppy to see if that boots (audibly), but it doesn't.
I'm not too worried. When I have time I'll just look through the boot process with the LA connected up. I've done a visual inspection and measured the SMT components for bridges but that seems fine.
regards,
Troed
I'm confident you'll get to the bottom of it
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...