Denial

Omega Race *seems* to run OK without setting BLK5 read-only. The only one I had issues with was Star Post (and I tried them all briefly.)

Have you looked at the price of Apple II / Apple II+ ? (not //e or //c which are a little more reasonable.)
Never should have gotten rid of my loaded Apple II+ 27 years ago

I got fed up with messing around with memory configurations and trying to remember the various SYS addresses for starting Scott Adams, VICMON and Programmers Aid, so I wrote a little BASIC program to help. I have also tried to collect together a complete set of Commodore VIC20 cartridge images (for ...

The pinned post is pretty useful. As far as I am aware the KERNAL entry points are reasonably well documented (at least the official ones) but the BASIC entry points are harder to find out about. I guess in this case it is all KERNAL stuff since we are actively trying to *avoid* some of the stuff BA...

Thanks Mike - I think I am going to rework my loader program to use those SYS calls rather than LOAD (which restarts the program leaving variables intact). This will make it much simpler! It is much more elegant not to have to turn off BLK1 in order to load Scott Adams :) Incidentally - is there is ...

It would be nice if my RAM cart had software control of bank selection, but I guess I will settle for a program that tells me which switch to move

I am seeing stupid crazy prices for vintage anything on eBay right now. Seems way pricier than even a year ago.

Thanks for this readme ... I hadn't run across that. I am currently writing a little loader program in BASIC for all the Commodore cartridges. I'll post it here once it is in better shape. Part of the motivation for this is so I don't have to remember the SYS addresses to start VICMON, Programmers A...

Awesome - that would explain the observed behaviour.

I have been playing around with loading the Scott Adams adventure games into my 32K expansion. The behaviour seems a little bit odd both in VICE and on real hardware. The Scott Adams games load into BLK2 ($4000-$5ffff) and BLK3 ($6000-$7fff). My memory expansion (Dorktronic 32K) allows each of BLK1,...

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.

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.

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.)

In the case of the 2 pin VIC, the external brick is just a transformer (with approx 12VAC secondary). The rest of the linear DC power supply (rectifier, smoothing caps) is inside the VIC-20. Generally with power supplies, it is capacitors that go bad. For the two prong VIC, these components are with...

It would be perfectly feasible to write an IRC chat client that uses an Internet modem connected to the user port (like the WiModem.)