H4 FIXES & KNOWN ISSUES

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exxos
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Re: H4 FIXES & KNOWN ISSUES

Post by exxos » Mon Dec 02, 2019 9:36 pm

4MB SIMM RAM FIX

A small oops on my part.. While ST RAS0 = SIMM RAS0, ST RAS1 = SIMM RAS2... This would mean RAM over 2MB probably wouldn't be found. This doesn't affect the Falcon RAM board in anyway.

A small bodge wire should fix the issue.

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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.

User avatar
exxos
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Posts: 8614
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Re: H4 FIXES & KNOWN ISSUES

Post by exxos » Thu Dec 05, 2019 12:02 pm

RS238 FIX

PaulJ found this issue.. viewtopic.php?f=78&t=2172&p=29736#p29736

Looks like when I renamed some pins (I would have deleted the signal to avoid it remaining everything else connected as well) and connected it back up, I put it on the wrong pin :roll: This would cause the RS232 port not to accept data (but would still send data) .

The current issue is below...Where pin 7 & 20 are the wrong.

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Corrected pinout.

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The red track needs cutting..

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and a bodge wire connecting on the new red track.

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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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