2022年3月14日 · Is there any chance to access Pin13 and Pin"P" on the Userport Header via Software (ASM or BASIC Program) ? I thought maybe you can access it like the Turbo Setting or the RTC ?

2017年5月29日 · Solder a link on the back between pin 40 (+5v) and pin 13 of the VIC socket. Switch on with VIC removed and check for +5v on pin 13. If all is OK, switch off C64, insert 8565 and you should now be up and running.

SID Concerto is a dual SID board for the Commodore 64. It features bank and page selection headers for SID2, dual built-in preamps identical to those inside the C64 so line-out audio output can be used directly from the board and a built-in SwinSID (SID emulation) for SID2 in case you don't have a second SID chip.

2019年5月21日 · Hello, in order to try and fix problems on the C64 some of you kindly offer advice about checking specific pins on the ICs, but unfortunately I am struggling to find layouts for some of these ICs such as the char rom, kernal, basic.

2020年5月31日 · According to the schematic Pin 13 is receiving its signal from Pin 9 on U20, the 556. However, I was reading HIGH coming out of Pin 9. I traced Pin 9 from the 556 and it's NOT connected to Pin 13 on U8. It's connected to Pin 9 on U8. And Pin 9 on U8 is connected to the reset pin on the 6810.

2020年5月20日 · Very early versions of the Commodore 64 did not have pins 6, 7, or 8. If you’re using the GGLabs CGA2RGBv2 board to convert the C128’s RGBI signal to analog RGB then the VGA Pinouts might be useful. NOTE: Pins 5, 6, 7, 8, …

One of the most commonly used ports at all. Many extensions like parallel floppy speeders, eprommers, relay cards, etc. connect to the user port. Please note that the SX-64's user port seems to be slightly INCOMPATIBLE which means that certain user port devices can cause DAMAGE! See description of pin 10-11.

Ein-/Ausgabeschnittstellen des Commodore 64: Expansionport, Userport, Audio/Video, serielle Schnittstelle, Datasettenport, Joystickbuchsen

2048k*8 SRAM pinout and general data. VIA pinout. Commodore 64 schematic diagram, scanned with 360 DPI, 2 colours. This seems to be the same (buggy) schematic that was published in the Commodore 64 Programmer's Reference Guide, but has been partially translated into German.

Building a 28-24 Pin ROM adapter for 27128 EPROMs for the original C64's and 1541's. This socket adapter provides the ability to have two ROM images (i.e. two KERNALS) which can be switched when needed. This adapter is very similar to the 2764 adapter above, but one extra address line must be dealt with.