Please note, there are still some bugs in the schematics: - All 74 LS xxx ICs should really be 74 HCT xxx. Using 74LSxx won't work! - The BAT 48 should be a BAT 85 - C5 and C9 are missing in the XL schematics (but are present in the component layout), they are just standard 100nF bypass capacitors. - C5 is missing in the XE schematics, this is also a 100nF bypass capacitor - There's no C6. Just in case you were curious :-) Files in this directory: comp-* component layout on XL/XE Freezer PCB pcb-* PCB layout in PDF format schematics* Schematics for XL and XE Freezer ultiboard-design* Original design files in Ultiboard format