Denial

Hi, I just bought an SD2IEC for my vic 20 that I recently bought to play "blitz" and other old games that I used to as a kid!

I also got a 16GB memory expansion card for the vic, and a ms paceman cartridge (works fine).

I download the SD card starter pack from thefuturewas8bit

When I executed the following command

LOAD”FB",8<return>
RUN

It loads the CBM file browser (the black 8k one) and I am able to navigate and select games. Unfortunately, for most of the ones I tried, it loads them (green lights flash) then it goes back to basic

I removed the memory expansion card and some of the games that didn't run before ran (e.g. alien blitz) but a lot of games didn't run

I also tried renaming some of the files so they are all in lowercase and <8 characters, but that didn't really help.

1- Any ideas how to debug?

2- How can I test my memory expansion card? Is there a SW or a HW test I can do?

3- How can I convert my favorite game from a .TAP format to a .PRG file (Blitz). I tried using tapclean-0.34-OSX but despite fixing the tape first (which ran fine on Vice) it will not produce an output file. No error messages nothing.

THANKS!

3 http://www.zimmers.net/anonftp/pub/cbm/ ... 0Blitz.prg

Incidentally, I think Blitz is PAL only. Has anyone ever tried to do a conversion to NTSC?

Blitz was the very first game I had for the VIC-20 (bought at the same time as my C2N, a few weeks after I received the VIC-20.)

mrr19121970 wrote:3 http://www.zimmers.net/anonftp/pub/cbm/ ... 0Blitz.prg

Thanks! You rock!

Bobbi wrote:Incidentally, I think Blitz is PAL only. Has anyone ever tried to do a conversion to NTSC?

Blitz was the very first game I had for the VIC-20 (bought at the same time as my C2N, a few weeks after I received the VIC-20.)

Correct it's Pal. It kinda works on NTSC but only takes up 2/3 of the screen and uses the bottom/right part.

If anyone knows how to fix it would be appreciated!

I guess it is a question of disassembling the code and looking for writes to the VIC registers at $9000 (horizontal position) and $9001 (vertical position). I should give it a go. I would love to play this old classic on real hardware and all my VICs are NTSC.

I thought it was written completely in basic ?

Try this...

blitz-ntsc

I just changed 4 numbers

Yay! Seems to work fine!

(One thing I discovered is that it will only run if I don't load the 'VIC Wedge'. Guess memory is tight in the unexpanded machine!)

I had forgotten Blitz was written in BASIC.