Sinclair ZX80 / ZX81 / Z88 Forums

As noted elsewhere, the videos I posted where created on a REAL, repeat, REAL TS/1000 with ZXPand+ interface. I've not come across the problem so I didn't know there was one. Adding a POKE 49151,0 to the start-up would negate the reason its there. It's there so that if say you pick item 46 from a lo...

The program uses memory location 49151 to keep track of the last item selected from the list. It checks this location on start up and moves the pointer to that item in the list. For some reason your system at start up has a high value stored there so your getting a subscript out of range error. I'll...

More sample projects...

HogRogProg collection

viewtopic.php?f=4&t=2867&p=30734&hilit= ... rog#p30734

Benhams Tops/Disks

viewtopic.php?f=11&t=1705&p=17620&hilit=benham#p17620

Regards;

Greg

Don't know what to tell you. The videos are from a real ZX81 (Timex Sinclair 1000 and ZXPand+). I just fed the data to Andy's player, didn't adjust any AY values. It could be the cheap camera, which was recording at 10FPS. Could also be a PAL vs NTSC thing.

Regards;

Greg

Hi All; ZXPand Organizer is a program that allows a ZX-81 with ZXPand or ZXPand+ interface to create a "project" of related files. It is a way of organizing files on the SD card, or emulator that supports the ZXPand. It is very similar, in some ways, to an old style MS-DOS frontend. See the enclosed...

By Fabrizio Caruso

Video and download...

https://www.youtube.com/watch?v=-gV5lYvxfRw

Regards;

Greg

When looking at a disassembled listing forward jumps are always off by one, they don't match the opcodes. For example, 20;01 is listed as JR +2 instead of JR +1, this can be confusing if you don't remember that. On the other hand backward jumps are listed correctly. Bitwise manipulations involving I...

When loading back a saved SCR file it will ovewrite the beginning of the VARS area. This is because the saved XXXX.scr file is 793 bytes when it should be 792 bytes. This is not a new bug it's been around for awhile, I just thought I'd mention it. It can cause problems at times.

Regards;

Greg

This is more of an annoyance than a bug. It occurs when loading the program and a folder is not found. It prints the message then crashes out. Then reloading it works, must update the ini file before crashing.

Regards;

Greg

This is a weird bug, see the attached picture. Almost seems like it's corrupting the ROM image somehow.

Regards;

Greg