Can all registered uses please login, even just for a few minutes..
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It helps build a picture where our "good traffic" is coming from..
Thanks :)
exxos's H5 A3 Build
Re: exxos's H5 A3 Build
@exxos at least its an easy fix and another thing spotted before you order the next batch.
If it ain't broke, test it to Destruction.
Re: exxos's H5 A3 Build
Well bugger me, feking Eagle libs AGAIN 
I hadn't even got past testing CPU, GLUE, MMU lines out yet. But thanks @stephen_usher probably wouldn't have got to that side of the board for a while as I am not at home tomorrow..
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I hadn't even got past testing CPU, GLUE, MMU lines out yet. But thanks @stephen_usher probably wouldn't have got to that side of the board for a while as I am not at home tomorrow..
Re: exxos's H5 A3 Build
@exxos Looks like you're nearly there with it now!
Excellent progress!
Excellent progress!
Re: exxos's H5 A3 Build
What I don't get is, The same fault is actually on the H4.. so why did that one workIcky wrote: Tue Oct 27, 2020 9:05 pm @exxos It’s always the libs that catch us out. Just like the regulator pins swap on the Sparkalphobia v1
Re: exxos's H5 A3 Build
The actual H4 board is wired correctly, but the schematic its wrong, so I need to work out what revision exactly I put into production and at what point it went tits-up..
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stephen_usher
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Re: exxos's H5 A3 Build
Two mistakes cancelling each other out, maybe?
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
Re: exxos's H5 A3 Build
The schematic is clearly wrong, but the actual PCB is correct ... But even so, there must be some other fault with the SMT version of the lib, but it looked identical to the PLCC one...
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Re: exxos's H5 A3 Build
Yep, looks like there are 2 mistakes in the lib which cancel each other out
At least with the PLCC52.. not looked at the SMT one yet.EDIT:
The SMT one had the correct PCB footprint, but wrong schematic pinout, so D3,D4 ended up invented.
The PLCC one had both wrong PCB and schematic, so they ended up correct as D3,D4 were swapped twice..
I have fixed both parts and created a new lib, so hopefully thats the end of it now.
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stephen_usher
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- Posts: 7475
- Joined: Mon Nov 13, 2017 7:19 pm
- Location: Oxford, UK.
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Re: exxos's H5 A3 Build
exxos wrote: Tue Oct 27, 2020 9:46 pm I have fixed both parts and created a new lib, so hopefully thats the end of it now.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
Re: exxos's H5 A3 Build
Next up, why my floppy drive cant access the disk, just nothing happens when I try to open DRIVE A, well other than it spinning the drive and busy bee then nothing
EDIT:
It seems to format a floppy, but refuses to read it
EDIT:
It seems to format a floppy, but refuses to read it