No, those advanced graphics took up most of the space.
Edit: cleaning up the source of my computer program to allow for easier implementation of various bankswitching methods as well as bankswitch detection. Edit:
I almost finished building my second multi-cartridge. This one has F8 bankswitching hardware built in. It can hold up to 16 8k games or 16 4k games (gets copied twice to the cart so when a bankswitch occurs it does not affect the game) After cleaning up the code of the pc connectivity tool that goes with the cartreader I could easily make changes to the bankswitching code. The cartreader still only supports F8, but F6 is pretty easy to implement too. I do not own any F6 games to test it with, so I am going to have to get some F6 games first.
It seems like I don't have to make any hardware modifications to the cartreader, so I will solder up a prototype and put it in an enclosure soon!
I wired some stuff the wrong way around. Using my oscilloscope and debugger cable I managed to track down the bug. Now the backup cartridge has F8 bankswitching hardware! Yay! I can play E.T. now (which is an F8 bankswitching game) along with 15 other 8k games. I can put 4k games on this cart as well.
I made the new backup cartridge and it worked right away. I did not make any mistakes while building it. This marks the beginning of a new era
Now I have to install the bankswitching hardware. Lets hope that works too!
Edit: it appears that the bankswitching hardware is very unreliable. It might be a design flaw though, because the mismatch with the orignal file is consistent and the readout is always the same. I will check if all the wires are attached correctly and then assess the situation.
Thanks! I am so glad that I can write to the multicart now! It took me so long to figure out what was wrong with the firmware. There turned out to be two major bugs: 1. On the cartreader side: When writing to the cartridge the serial buffer overwrites the block size parameter. Fixed. 2. On the PC side: Serial timeout not set. It expected the serial to be ready instantly. Fixed.
Things to fix: remove delay from pc program to gain speed.
It is more difficult to fix bugs on the pc because I don't have a C debugger installed yet and it's far from low-level.
Allright! I can write to my old 8k multicartridge with the new cartreader now! I had to do some bugfixing. The timeout on the serial port is now higher so there is plenty of time for the cartridge to dump its data.
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I'd love to join some day, but it is kind of late even for me.