Search found 198 matches

by GCHarder
Tue Dec 04, 2018 12:31 am
Forum: SALES
Topic: A Gaggle of ZX81's for sale
Replies: 4
Views: 411

Re: A Gaggle of ZX81's for sale

A more realistic price would be around $200.00 for the lot, as a full package usually ranges between $30 to $50. It would be nice to know what "real world" application they were used for. The seller says they were bought from an engineer, they definitely look like they had a hard life. Regards; Greg
by GCHarder
Sat Dec 01, 2018 10:48 pm
Forum: SALES
Topic: A Gaggle of ZX81's for sale
Replies: 4
Views: 411

A Gaggle of ZX81's for sale

Don't have enuff Zeddies, well here's a change to get a flock of them.

https://www.ebay.com/itm/Lot-Of-15-Sinc ... SwiwZcAKYJ
by GCHarder
Tue Nov 27, 2018 11:02 pm
Forum: GAMES
Topic: Labyrom
Replies: 3
Views: 291

Labyrom

This is a nice game published in issue 108 of Hebdogiciel. Magazine, 1985. It is a Pac-man style game, eat the pills-avoid the monsters, but uses 2x2 sprites, somewhat similar to Mazogs. Fast moving and fun, but the original program's instructions were in French so I translated them, as best I could...
by GCHarder
Sat Nov 17, 2018 12:09 am
Forum: GAMES
Topic: 50 games with hires in 1K
Replies: 20
Views: 1067

Re: 50 games with hires in 1K

Just 16K RAMpack wouldn't work, it also has to be Hi Res capable.

Regards;

Greg
by GCHarder
Wed Oct 31, 2018 2:55 pm
Forum: ZX BASIC
Topic: Possible bug in ZX81x2 ROM ?
Replies: 36
Views: 1725

Re: Possible bug in ZX81x2 ROM ?

Here's a list of the ROM calls used, the Siggi problem is caused by the STR$ function being moved. ;------- Rom and Ram Symbols ------- SLOW equ $0F2B DISPLAY_5 equ $02B5 DISPLAY_3 equ $0292 LOOP_11 equ $0216 SCANNING equ $0F55 FP_TO_A equ $15CD FIND_INT equ $0EA7 STACK_BC equ $1520 FP_TO_BC equ $1...
by GCHarder
Tue Oct 30, 2018 10:20 pm
Forum: ZX BASIC
Topic: Possible bug in ZX81x2 ROM ?
Replies: 36
Views: 1725

Re: Possible bug in ZX81x2 ROM ?

I'll check the whole listing tonight to see if there are any another esoteric ROM calls.

Regards;

Greg
by GCHarder
Sat Oct 27, 2018 4:35 am
Forum: ZX BASIC
Topic: Possible bug in ZX81x2 ROM ?
Replies: 36
Views: 1725

Re: Possible bug in ZX81x2 ROM ?

The "FILL" routine makes a call to n-mod-m (1C37) at 48F5, it's no longer at that location. The program doesn't crash because it hits the RST 08 with error code E6 at 1C49, causing the stack to reset and return to BASIC. That's why nothing is printed.

Regards;

Greg
by GCHarder
Tue Jun 19, 2018 10:23 pm
Forum: Software
Topic: ZX81 Youtube videos
Replies: 2
Views: 1067

ZX81 Youtube videos

Just posted a "MacroLIFE" animation video.

https://www.youtube.com/watch?v=A8oVXCXJyZc

I'll add other videos and demos here as I get them done.

Regards;

Greg
by GCHarder
Sat Jun 16, 2018 10:17 pm
Forum: SALES
Topic: Pretty nicer setup
Replies: 0
Views: 498

Pretty nicer setup

Here's a pretty nice setup at ebay... https://www.ebay.com/itm/SINCLAIR-TIMEX-TS1000-ZX81-computer-in-DKTronics-console-64-KRAM-8K-NVRAM/362355938165?epid=2130390092&hash=item545e18d375:g:GiYAAOSw88RbJTSD Keyboard, 64K, Hunter NVM Board, composite video, 3 books, and a "Buy It Now" price of $149.95,...
by GCHarder
Sat Jun 16, 2018 9:53 pm
Forum: Sinclair Misc
Topic: Micro Cornucopia
Replies: 0
Views: 633

Micro Cornucopia

Micro Cornucopia was an old computer magazine published in the 80's. While not specifically geared towards the Sinclair computers, I always found it an interesting read. It's mostly a magazine for "programmers" especially C and Pascal. They also published hardware projects as well. It was mostly "me...