Cartes Mères du C64

TODO: à traduire...

Révisions

PCB	Number	Schematics	Revisions	Note
Original	326298-01	326106	Original, 1,2,3,4,5,6,A,B,C	5-pin board (CN5-Video port has 5 pins).
KU-14194HB	KU-14194HB	251022	Original,A,B,C	The KU-14194HB was the first C64 board with separate Y/C video signals. It is a PAL only board.
A (CR)	250407-04	251138	Original,A,B,C, D	8-pin board (CN5-Video port has 8 pins)
B	250425-01	251469	Original,A,B,C	8-pin board (reduced oscillator circuit) CIAs, ROMs, CPU, SID, PLA, and VIC may be all socketed
B-2	240441-01	251469	Original	8-pin board (reduced oscillator with component changes).
B-3	250466	252278	Original,A	Longboard C version Only 2 RAM chips, U9, U10 the last revision to the classic C64 motherboard It was otherwise identical to the 1984 design, except for the two 64 kilobit × 4 bit DRAM chips that replaced the original eight 64 kilobit × 1 bit ICs After the release of the C64C, MOS Technology began to reconfigure the C64's chipset to use HMOS production technology The main benefit of using HMOS was that it required less current to drive the IC, which consequently generates less heat This enhanced the overall reliability of the SID and VIC-II. The new chipset was renumbered to 85xx to reflect the change to HMOS
E	250469	252312	Original, 1,2,3,4,A,B	Shortboard C version KERNAL & BASIC ROMS combined into U4 New IC memory controller, U8 The "short board" used the new HMOS chipset, featuring a new 64-pin PLA chip The new "SuperPLA", as it was dubbed, integrated many discrete components and Transistor--Transistor Logic (TTL) chips In the last revision of the C64C motherboard, the 2114 color RAM was integrated into the SuperPLA