Denial

ral-clan wrote: Just pointing out that even within CBM products, there seemed to be variations on some cartridge ROMs.

Well this is CBM all over - no two CBM articles contain exactly the same thing :))

6502dude wrote:I think I know source of carts with eprom in them........

I don't think pirate carts would have a C= part number on the PCB though. Possible, of course - just not too likely.

Hi,

The one I was talking about is top left in your picture. I have that one, and the middle two versions. Haven't seen the bottom one before, but I have seen the top right version.

Are these early production, or late production (getting rid of spare parts)?

I played Secret of Bastow Manor (it was a 4-part multiload text adventure for unexpanded VIC) back in the mid-1980s. It was my FAVORITE GAME. But I have not been able to find an image of it anywhere. The C64 version is everywhere, I can't find the VIC version. Our copy was not an original retail cop...

The bandwidth should already be limited by hardware. I guess there is a low pass filter on the paddle pot inputs (without looking at the schematic).

I have a couple of C= cartridges - VIC-1923 GORF is the one in front of me, but I know I have at least one other - that are a little unusual and I'm wondering if they are early production or what. The cart is brown plastic (like a RAM expander) instead of the usual white. The front metal piece is bl...

Open your datasette and press play (with no tape inserted). Look at the hardware that comes out of the bottom of the tape bay when you press play. From right to left, it is : * capstan - pulls tape through mechanism (from left to right) at regulated speed * record/play head (metal) * erase head (pla...

I'm working on a project that builds a PDP-1 emulator onto a standard 90x55mm business card. My next project after that will be an 8-bit micro emulator in the same form factor, and I would prefer to do either a VIC-20 or ZX81. I'm curious to know what other peoples' preferences would be: * Should it...