Shameless plug
The FLAT images will also work on the MegaSDCart with or without extensions!

OK - update 1 with AutoCRUN and CR added when LOADING PROGRAM.

Can you please provide a small "how to" get a BASIC Program in the right format / cartridgespace for this awesome design? There is no actual design - more a kind of organic cobbling together :lol: I've attached the DIY manual and tools - but I will probably update the utility part over time, as I'm...

Attached is BASIC83B with the entire CVDEMO tape included, in both flat and AB images.

Use CLOAD or CRUN to load from the now free ROM space.

Enjoy!

The ROM is not patched as such, only when it's injected into the image.

ROM image creator.

Knocked up in lunch break - so let me know if you hit any issues.

I took the executive decision to fix the byte at $7223 for BASIC - saves writing and having a panic attack

Good luck!

The ROMs and subsequent images are really straight forward. The Multicart is just a sliding 32K window - hence the 32K images. Each 32K image is arranged as two 16K blocks - ar$e backwards - so high memory first. This gives you, in 4K blocks $8000 $9000 $A000 $B000 $4000 $5000 $6000 $7000 So - take ...

The "mirroring" is an artefact of missing address lines, nothing more. The console is just reporting what it sees, as without the required address lines, you'll just wrap to what's actually connected. This is great news as it means folks with any multicart can start thinking of how to practically us...

OK - here's a little test utility. There are two styles in the zip, flat memory $4000->$C000 and romb $8000->$C000 + $4000-$8000. Hopefully the second one should give what you expect. Basically each 2K page has a valid program with the address to check in each. They should be inline, so $4000 == $40...

To overcome the lack of RAM - both HAPMON and the Shop advert thing had an EEPROM at $4000.