Forgottenmyname - Progress

Where Alpha builders can post pics and progress etc
Forgottenmyname
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Re: Forgottenmyname - Progress

Post by Forgottenmyname » Fri Sep 21, 2018 11:19 pm

Cool, thanks very much for your help and for sending the diag rom.

This fault finding is becoming addictive.

Btw, if you think it's the Ram, then any suggestions where I can start looking before the Rom arrives?

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Re: Forgottenmyname - Progress

Post by exxos » Fri Sep 21, 2018 11:28 pm

Forgottenmyname wrote:
Fri Sep 21, 2018 11:19 pm
This fault finding is becoming addictive.
:lol: You develop twitches and start sleeping less after a while though ;)
Forgottenmyname wrote:
Fri Sep 21, 2018 11:19 pm
Btw, if you think it's the Ram, then any suggestions where I can start looking before the Rom arrives?
Only thing is to check everything on the schematics ... I've been checking everything past 2 days, cant see anything wrong though.

2 machines with the same fault is unlikely to be a fault with soldering or something.

I'm assuming the lower CPU variables are not being set, interput vetors are in lower ram, so if they are not setup, then it would cause such a fault. Though I don't know how far down the ROM code that has to go...

Diagrom will state if its found any RAM or not , and allow testing... Again, the atari cart is useless for debugging because its gets hung up on stuff and doesn't let you run RAM test :(

I do have YAART cartridge version ....
YAART.zip
(6.29 KiB) Downloaded 2 times
Obviously its getting pretty far in booting to run the cart in the first place.. so maybe YAART will boot... Maybe report amount of RAM and test it... Worth a try if you can do new cart ROMs...
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
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Re: Forgottenmyname - Progress

Post by Forgottenmyname » Fri Sep 21, 2018 11:31 pm

Yeah I can do new roms, will see if I can burn that tomorrow. Will it boot on my STe as the Mega has been raped and pillaged till I can get some new chips.

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Re: Forgottenmyname - Progress

Post by exxos » Fri Sep 21, 2018 11:34 pm

Forgottenmyname wrote:
Fri Sep 21, 2018 11:31 pm
Yeah I can do new roms, will see if I can burn that tomorrow. Will it boot on my STe as the Mega has been raped and pillaged till I can get some new chips.
I assume it will work on the STE yes.. pretty sure it does...


Also check the vias , some are really close near the RAM header pins...

1.jpg
1.jpg (47.09 KiB) Viewed 118 times
2.jpg
2.jpg (23.24 KiB) Viewed 118 times

Might be worth checking that all the MMU RAM lines are switching, RAS, CAS, MAD lines etc.
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: Forgottenmyname - Progress

Post by Forgottenmyname » Fri Sep 21, 2018 11:36 pm

Ok, I can do all that, will let you know how I get on tomorrow.

Many thanks again.

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Re: Forgottenmyname - Progress

Post by exxos » Fri Sep 21, 2018 11:46 pm

Awesome. I've Uploaded the layer views, so easier to look around for potential via to pad shorts...

viewtopic.php?f=19&t=1215
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: Forgottenmyname - Progress

Post by Icky » Sat Sep 22, 2018 12:37 am

Would be interesting to see a photo of your board with the different memory option being used.

Icky

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Re: Forgottenmyname - Progress

Post by exxos » Sat Sep 22, 2018 9:29 am

Icky wrote:
Sat Sep 22, 2018 12:37 am
Would be interesting to see a photo of your board with the different memory option being used.

Icky
viewtopic.php?f=64&t=1204&start=50#p10349
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Icky
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Re: Forgottenmyname - Progress

Post by Icky » Sat Sep 22, 2018 9:49 am

exxos wrote:
Sat Sep 22, 2018 9:29 am
Icky wrote:
Sat Sep 22, 2018 12:37 am
Would be interesting to see a photo of your board with the different memory option being used.

Icky
viewtopic.php?f=64&t=1204&start=50#p10349
Ah must of missed that one with all the traffic on these threads :) - Nice pic.
exxos wrote:
Fri Sep 21, 2018 11:28 pm
Forgottenmyname wrote:
Fri Sep 21, 2018 11:19 pm
This fault finding is becoming addictive.
:lol: You develop twitches and start sleeping less after a while though ;)
I agree this is becoming addictive. Great fun.

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Re: Forgottenmyname - Progress

Post by Forgottenmyname » Sat Sep 22, 2018 10:00 am

And here it is with the marpet fitted.

Will probably use this for now as I'm loathed to disturb it now it's workingish :D
20180922_095900.jpg
20180922_095900.jpg (3.61 MiB) Viewed 73 times

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