Sinclair ZX80 / ZX81 / Z88 Forums

I am sorry. I uploaded the wrong file.
I will correct this a bit later.

edit: removed file again

On ZX80 you can use original or zxpand ROM for font, whatever is less work/code

Good! I will try replacing only the ZXPand ROM tonight and enable ZXPand in ZX80 mode. I just tried it out. It does work! So everything you someone needs to do is exchange the zxpand.rom against my zx80p.rom (name must be zxpand.rom). Then select zx80 as machine and zxpand for storage - et voila - ...

Yes it is.

My zx80zxpand ROM contains everything including fonts. If you use this on zx81 mode like I did you need this in both positions: zx81 and ZXPand ROM. See my first post.
In zx80 mode original 4K can remain for font and my ROM as zxpand rom.

So when implementing ZX80 ZXPand you don't have to switch between ROMs. Instead just load my 8K ROM at location 0-8K when ZXPand is enabled in ZX80 machine. This is the same I do, when you enable zxpand, I load the zxpand.rom , and you never switch to the original rom unless you disable zxpand. I w...

Good! I will try replacing only the ZXPand ROM tonight and enable ZXPand in ZX80 mode.

So when implementing ZX80 ZXPand you don't have to switch between ROMs. Instead just load my 8K ROM at location 0-8K when ZXPand is enabled in ZX80 machine.
My ROM doesn't support any ZX81 command.

Hi What are the differences of your ZX80 zxpand rom? Cheers Cesar The ZX80 does not support /ROMCS so it is not possible to disable the ROM and switch to ZXPand ROM. Instead I made a 8K ZX80 ROM which replaces the 4K original ROM. The only difference in the lower 4K is the pointer to the command ta...

Hi Paul. Have you fixed the other bug I once mentioned as well as the one above when using CAT? If there are more files than can be listed the "MORE" command appears. But unless you strike the newline key at light speed(which will list the extra files) no other files will be listed when using a nor...