Search found 3222 matches

by Moggy
Mon Mar 18, 2024 5:02 pm
Forum: Development
Topic: Enhanced ARX True High Resolution Display Driver
Replies: 10
Views: 211

Re: Enhanced ARX True High Resolution Display Driver

I recall there was an UDG4ZXpand board (which I think Andy created also but correct me if I am wrong). I'm wondering if this will make the 8K-16K RAM provide by the ZXpand ARX compatible. Does anyone know? I have tried the demo on Andy's UDG4ZXpand board on an issue one ZX81 with an issue three ZXp...
by Moggy
Mon Mar 18, 2024 11:57 am
Forum: Development
Topic: Enhanced ARX True High Resolution Display Driver
Replies: 10
Views: 211

Re: Enhanced ARX True High Resolution Display Driver

Works with SZ-81 ok.
by Moggy
Mon Mar 18, 2024 11:30 am
Forum: ZX BASIC
Topic: Strange integer behaviour
Replies: 5
Views: 146

Re: Strange integer behaviour

Internally accurate to 9 - 10 digits with 8 displayed after rounding.
by Moggy
Thu Mar 14, 2024 5:04 pm
Forum: Hardware
Topic: Atari joystick without ZXpand+
Replies: 33
Views: 728

Re: Atari joystick without ZXpand+

The Cheetah.
by Moggy
Thu Mar 14, 2024 4:59 pm
Forum: Hardware
Topic: Atari joystick without ZXpand+
Replies: 33
Views: 728

Re: Atari joystick without ZXpand+

This be the beast.
by Moggy
Thu Mar 14, 2024 4:36 pm
Forum: Hardware
Topic: Atari joystick without ZXpand+
Replies: 33
Views: 728

Re: Atari joystick without ZXpand+

@Michelle.

I have found two interfaces for the Zeddy one a Cheetah the other unknown. I do Have a Kempston but this I seem to remember, unlike what Mark describes, has the extra tangs as used on a Spectrum interface.

Anyhow just PM where you want them sending and I'll do the rest. :D

No charge.
by Moggy
Thu Mar 14, 2024 2:28 pm
Forum: Hardware
Topic: Atari joystick without ZXpand+
Replies: 33
Views: 728

Re: Atari joystick without ZXpand+

I'm fairly certain I have a Kempston interface for the 81 somewhere, which I acquired in a job lot. I have no use for it so if I can dig it out you are more than welcome to it.
by Moggy
Wed Mar 13, 2024 2:54 pm
Forum: Hardware
Topic: ROM base for ZXpand+
Replies: 2
Views: 177

Re: ROM base for ZXpand+

According to Charlie it's based on the 622 ROM, but stripped of its Character table and the printer routines to make room for those needed by the spand. When in use the spands ROM points to the character table in the zeddy ROM for its needs and obviously CONFIG X is required to use the zeddy ROM for...
by Moggy
Mon Mar 11, 2024 5:04 pm
Forum: Software
Topic: Forth Hints & Tips: Kaleidoscope
Replies: 9
Views: 649

Decimals in Forth. Part two.

Part two. Continuing on with our exploration of decimals in Forth we shall explore number formatting and the use of the system variable DPL. At this point I would like to recommend a most excellent Forth publication which is not only based on Forth-79 but whose superb, pertinent examples and exercis...
by Moggy
Mon Mar 11, 2024 2:57 pm
Forum: Development
Topic: werewolf for the zx81 16k
Replies: 11
Views: 684

Re: werewolf for the zx81 16k

Excellent Siggi! Except you left a space between . "
:lol: :lol: :lol: :lol: :lol: