DOWNLOAD ZIPPED
FIX HISTORY (SCHEMATIC)
- Some of the jumper pads removed as deemed unnecessary.
- HSYNC fix https://www.exxosforum.co.uk/forum/viewt ... 1185#p9963
- BR pull up fix https://www.exxosforum.co.uk/forum/viewt ... =10#p10084
- 5x resistor fix https://www.exxosforum.co.uk/forum/viewt ... =20#p10098
- VIDEO socket fix https://www.exxosforum.co.uk/forum/viewt ... =20#p10279
- 16MHz buffer fix https://www.exxosforum.co.uk/forum/viewt ... =30#p10361
- GLUE Dataline fix https://www.exxosforum.co.uk/forum/viewt ... =30#p10524
- MFO pull up fix https://www.exxosforum.co.uk/forum/viewt ... =30#p10544
- RAM RW fix https://www.exxosforum.co.uk/forum/viewt ... =30#p10613
- KB connector missing gnd pin8 fixed
- 1772 IRQ typo fix https://www.exxosforum.co.uk/forum/viewt ... =40#p10656
- KB resistor fix https://www.exxosforum.co.uk/forum/viewt ... =40#p10675
- ACIA databus fix https://www.exxosforum.co.uk/forum/viewt ... =50#p10695
- Floppy pull up fix https://www.exxosforum.co.uk/forum/viewt ... =60#p10751
- Added buffer to MONO output.
- Fixed common name "RD" between 1772 & 232 circult https://www.exxosforum.co.uk/forum/viewt ... 374#p11374
- Changed reset capacitor to 47uF to increase reset time as was causing issues when booting up.
- Changed 8 pin XO to 14 pin.
- PLANNED UPDATE for 1772 BUS SHORT FIX https://www.exxosforum.co.uk/forum/viewt ... 641#p11641
- PARALLEL PORT FIX https://www.exxosforum.co.uk/forum/viewt ... 032#p12032
- VIDEO BRIGHTNESS FIX https://www.exxosforum.co.uk/forum/viewt ... 063#p12063
The BGACK pull up fix wasn't actually needed, it was another side of a jumper pad, so wasn't showing up in the diagram when I looked before..
https://www.exxosforum.co.uk/forum/viewt ... =10#p10086
Some resistors have been moved to RP5 (new resistor pack). New RP near 1772 for pull ups (3 seperate resistors moved)
FIX HISTORY (PCB)
(bare in mind nothing in this PCB is routed. Connectors moved may not be 100% but as close as I can tell )
- PSU holes should now be correct
- MIDI & Cartridge posts moved upwards, should now be correct
- All back row ports (aside from serial) have been moved to the right and adjusted. They all should now align.
- MIDI connectors now have "dual holes" to fit both styles.
- Added floppy mounting holes.