I will just repost this old message of mine, it contains a lot of information about C64 motherboards. If I counted correctly, there are 8 different major versions, though not all of them have their own name and assembly number (like that strange original PAL board and the C64E without the 2114 chip). I'll add the 250469 rev.A into the text, I discovered that one after I wrote that text. Nicolas -------- Original Message -------- Subject: Re: Device list: VIC-20 Date: Fri, 15 Dec 2000 10:32:55 +0100 From: Nicolas Welte <email@example.com> To: firstname.lastname@example.org Ruud Baltissen wrote: > > I made a list of board > > names and assembly numbers for the C64 and the 128 once, I think I can > > add the two VIC-20 as well (I should have both of them) and post the > > list again. > > Please do. Could you include some recognisable features? Hallo Ruud, here is a list I compiled for an article I wrote for GO64 magazine. Since it was about PAL/NTSC conversions, some information about which VIC-II is used and where it is is included. I'll add some other features as well. The VIC-20 is still missing, I have to open up my old NTSC machine first. Rechnertyp|PCB-ASSY|VIC-II|Trimmer|VIC-II PAL|Jumper PAL|VIC-II NTSC|Jumper | |Platz |Platz |Typ-Nr. | |Typ-Nr. |NTSC ----------+--------+------+-------+----------+----------+-----------+------- C64 |326298 |U19 |R27 |6569 |E1-E2 |6567 |E1-E3 this is the original NTSC machine with 5 pin DIN video port. A similar looking PAL machine with 8 pin DIN video port exists, but there's no part number information on the board. Both have a copyright date of 1982 printed on the board. C64A |250407 |U19 |R27 |6569 |E1-E2 |6567 |E1-E3 This is sometimes referred to as the C64CR as well. It still has the four-chip oscillator circuit and the only difference to the strange PAL board from above are the component locations and the copyright from 1983. C64B |250425 |U19 |CT1 |6569 |J2 zu |6567 |J2 auf First board to use one-chip 8701 oscillator. VIC-II is now mounted horizontally instead of vertically (you know what I mean ;-), some diodes are patched onto the board to protect the serial port CIA. Copyright 1984. C64B2 |250441 |U19 |CT1 |6569 |J2 zu |6567 |J2 auf The service manual says this is the same as the C64B, except for the diode fix that is now integrated into the board. Never seen this one in reality. Copyright probably 1985? C64B3 |250466 |U19 |CT1 |6569 |J2 zu |6567 |J2 auf Same as C64B2, but the eight 4164 DRAMs have been replaced by two 41464 DRAMs. Copyright 1986, has been used in C64Cs mostly. This PCB number confused me several times already, because the service manual claims it to be 250446. But that is one of the 1541A boards. C64E |250469 |U7 |CT1 |8565 |J3 zu |8562 |J3 auf This is the completely redesigned small board with HMOS chips and the 64pin gate array chip. There are two versions: 250469 rev 3, rev 4 and rev A have the 251715-01 gate array and an 2114 color RAM chip, but 250469 rev B has the 252535-01 and no separate color RAM chip. For simplicity we could refer to this last version of the C64 as the C64E2, though I never saw it being called this way in a Commodore document. I think both of them are Copyright 1987. C128/C128D|310379 |U21 |C20 |8566 |J1 zu |8564 |J1 auf This is the original C128 board as found in the C128 and plastic C128D. C128CR |250783 got this from the prototype board picture on funet. Probably never released, it is a board that fits into the 128 and plastic 128D, but uses the slightly different components from the 128DCR (most noticably VDC 8568 instead of 8563, even if it's labeled 2568 on the prototype). C128DCR |250477 |U21 |CT1 |8566 |J1 zu |8564 |J1 auf This is the board from the metal C128D with integrated drive electronics. Nicolas - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail email@example.com.
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