On Tue, 6 Jun 2000, Nicolas Welte wrote: > Done. My 128DCR reads 5.02V between pins 2 and 8 of the video port, and > my 128D has 4.94V. So all 128s should have 5V there. I also tested a > C64C (E board, ASSY#250469 for Richard), it also has the 5V there. And > now, surprise! I just grabbed a C64B (#250425, judging from the diode > fix at the cassette port and the 1 chip clock circuit, I didn't want to > open the machine) and it also has the 5V supply there. I didn't know > this before. So, starting from 1984, all C64 and C128 machines have this > feature. Strange they never mentioned it in a user's manual. I opened the 128DCR and tested the connection from the inside. It was 5 V. I also tested my C128, several versions of C64, the C16 and Plus4. I have changed the pinout list to reflect the results. I don't have a SX64, so had to rely on the schematics. By the way, is there a "D" version of the C64? There is the original version, an A, B, B2, C and E. What happened to "D"? 8 7 Commodore 6 Video Connector 3 1 5 4 2 Plus4 C16/C128 CBM-II VIC20 VIC20CR C64 Pin C64A/SX64 C64B/C/E --------- ------------ ------- ---------- --- ---------- ---------- (R) Luminance +5 V +5 V Monochrome 1 Monochrome Monochrome (Y) Ground Ground Ground Ground 2 Ground Ground (B) V. Sync. Audio Audio Audio 3 Audio Audio (W) (W) Video 50 Ohm Video Video Video 4 Video Video (Y) H. Sync. Video Video Audio In 5 Audio In Audio In 6 Chroma Chroma (R) 7 8 +5 V - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org.
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