Search found 1255 matches

by Andy Rea
Sat Oct 21, 2017 10:47 am
Forum: Software
Topic: ZX81 Newsletter 1983
Replies: 20
Views: 181

Re: ZX81 Newsletter 1983

Fabulous, that's the weekends reading sorted... Maybe next weekend too :)

Thanks for sharing

Regards Andy
by Andy Rea
Thu Oct 19, 2017 9:09 pm
Forum: GAMES
Topic: Short Circuit (David Green, Your Computer, Nov 1985)
Replies: 2
Views: 61

Re: Short Circuit (David Green, Your Computer, Nov 1985)

Golly thats fast ! Pretty darn good too.

great find and thanks for sharing.

Andy
by Andy Rea
Sun Oct 15, 2017 5:29 pm
Forum: Sinclair Misc
Topic: MEMOTECH
Replies: 15
Views: 291

Re: MEMOTECH

Well i should have thought the external keyboard would be a number 1, the interface it's self is not difficult, but getting a custom keyboard fabricated could be somewhat costly


Andy
by Andy Rea
Thu Oct 12, 2017 4:45 pm
Forum: GAMES
Topic: Othello (A.K.A. Reversi)
Replies: 8
Views: 600

Re: Othello (A.K.A. Reversi)

The ARX mod variant is giving me some trouble. I had random stability problems, but after playing it for a while I have the impression that it is stable enough. To save enough memory to fit in 16K I'm using the ROM font with some shift&overlap trick to simulate the missing characters. OTHELLO_ARX16...
by Andy Rea
Wed Oct 11, 2017 10:18 am
Forum: Software
Topic: Charlie's Red Ant - a ROM instruction that reads throughout memory
Replies: 22
Views: 844

Re: Charlie's Red Ant - a ROM instruction that reads throughout memory

stefano wrote:
Wed Oct 11, 2017 9:05 am
I wonder if it was initially thought as a cheap refresh trick.. the zx81 is so unconventional !
I doubt that is the case, it's a little too slow for dynamic refresh.

Andy
by Andy Rea
Mon Oct 09, 2017 4:58 pm
Forum: Development
Topic: Solved: Calling MAKE-ROOM/099E
Replies: 11
Views: 218

Re: Calling MAKE-ROOM/099E

an extra halt in the display file will upset the display routines... i believe the halt instruction is also the marker for end of lines in basic... so erm maybe it's trying to diplsay more lines than it can...

regards
by Andy Rea
Mon Oct 09, 2017 3:12 pm
Forum: Hardware
Topic: Query on a Issue 1 ZX81
Replies: 34
Views: 2347

Re: Query on a Issue 1 ZX81

I'd like one of those boards
by Andy Rea
Sat Oct 07, 2017 10:18 pm
Forum: Software
Topic: Font Manager for ZXPand and UDG
Replies: 16
Views: 299

Re: Font Manager for ZXPand and UDG

sirmorris wrote:
Sat Oct 07, 2017 10:11 pm
:roll: ehrmagerd yous guys you're so first-9-months-of-2017.

The latest firmwares have removed the egregious R/O bodge completely ;)
Whoops :oops: .... is it still present in eightyone 1.7? Which is where i was having some issues earlier...
by Andy Rea
Sat Oct 07, 2017 8:26 pm
Forum: Software
Topic: Font Manager for ZXPand and UDG
Replies: 16
Views: 299

Re: Font Manager for ZXPand and UDG

Just an observation that may affect SOME Xpand users depending on firmware used. Some of the CHR files in the fonts folders have their attributes set to read only which in certain cases (Mine at least ) can cause the Xpand to jump into normal zeddy mode so that when it comes to loading that particu...
by Andy Rea
Fri Oct 06, 2017 10:26 pm
Forum: Hardware
Topic: Long time listener, first time poster. Dead - ex spectrum
Replies: 15
Views: 278

Re: Long time listener, first time poster. Dead - ex spectrum

sirmorris wrote:
Fri Oct 06, 2017 10:17 pm
Why. WHY do I do this to myself.
Image
That Sir is excellent :mrgreen: