Sinclair ZX80 / ZX81 / Z88 Forums

dr beep wrote: This will not come available because I am coding 10 games in a gamepack which will be sold by CRONOSOFT
and all revenues will go to charity.

Great idea. But I hope, that is will not be necessary to buy some old-fashioned tapes ..

Siggi

Because the first five bytes of the ROM are written to by the Basic as the result of an error in the maths. It's not a bug, it's a feature: instead of writing the 5 bytes of a floating number to the calculator stack, they are written to "/dev/null" (or address 0 in the Z80 memory map ;) ), when the...

To get the keyword "PRINT" somewhere in the middle of a REM line, you could also enter first the keyword THEN (SHIFT 3). After the keyword "THEN" the keyword "PRINT" could be entered just like at the beginning of a line. Then go back to the keyword THEN, delete it, and you have what you want ... Siggi

My current highscore is 4627.
Good or bad?

Siggi

Paul wrote: At the moment my Bruichladdich Octomore Orpheus is my favorite bottle

Happy to hear that. So my Bushmills Single Malt bottle is left for me alone

Siggi

Maybe someone can help answering some questions about physical memory layout of the good old zeddy. As I found on the internet you could be the right person to answer this. 8-) Standard is 0-1fff system ROM 2000-3fff unused space ? 4000-7fff 16 k RAM (extension) 8000-ffff probably not used Hi Karl ...

Looks great

Perhaps the ghosts could sometimes (RND) jump around a little bit (some N x 8 pixels up/down/left/right (N = 1..3)), when the cross is near them?

Siggi

Moggy wrote: Whats a PC

Something to replace an old TV set: http://forum.tlienhard.com/phpBB3/viewt ... ?f=2&t=572



Siggi

Hi Angus,
could you ZIP the files and then try to post them here? I don't know the maximum file size, which is allowed here in the forum. But some 100 kB should be possible ..

Siggi

Here are the listings of the 3 patches of the original rom. At the end a jump to the LOAD routine is executed, which is patched to load from MMC. The listings are made by EO as printer output. The name of the file "A" to be loaded is stored at address $25 (3 unused bytes there). The label is "NAME"....