Search found 1301 matches

by dr beep
Tue Nov 17, 2020 10:41 pm
Forum: Welcome Area
Topic: Hello from SheddyIan (currently in the spare room)
Replies: 4
Views: 328

Re: Hello from SheddyIan (currently in the spare room)

welcome,

you have a lot of games to pick up after you left....

did you try some of my 1K hires games?
(available in the new games section)
You might like them.

Johan "dr beep" Koelman
by dr beep
Thu Nov 12, 2020 9:13 pm
Forum: Welcome Area
Topic: New to Sinclair
Replies: 6
Views: 255

Re: New to Sinclair

Welcome, have fun finding out what your computers are capable of.
by dr beep
Fri Nov 06, 2020 9:22 pm
Forum: Software
Topic: Need help working something out.
Replies: 12
Views: 333

Re: Need help working something out.

ld hl,16513
ld bc,0
loop:
inc hl
ld a,(hl)
cp 29
jr nz,cont
inc bc
cont:
cp 118
jr nz,loop
ret
by dr beep
Sun Nov 01, 2020 2:55 pm
Forum: Software
Topic: Drop the PRINT instruction on ZX80
Replies: 8
Views: 714

Re: Drop the PRINT instruction on ZX80

The command makes sense, the result of the printing is only displayed when the boolean result from the USR call is true, which it is when BC >0. However the PRINT itself wil print nothing even when BC >0, the ; will keep the cursor on the same line and not to the next line. Your problem is different...
by dr beep
Sat Oct 31, 2020 8:47 pm
Forum: Software
Topic: Drop the PRINT instruction on ZX80
Replies: 8
Views: 714

Re: Drop the PRINT instruction on ZX80

LET A=USR 30000

or

PRINT “” AND USR 30000;
by dr beep
Fri Oct 16, 2020 10:07 pm
Forum: Emulators
Topic: Zeddy emulator for ZX Spectrum
Replies: 17
Views: 14567

Re: Zeddy emulator for ZX Spectrum

Paul wrote: Fri Oct 16, 2020 7:06 pm
dr beep wrote: Fri Oct 16, 2020 4:09 pm I only know SLOWLOADER which loads a ZX81 program and will add
REM to the not working commands.
Yes I had bought that as an original.
It worked quite well.
But as most programs for ZX81 had MC these would not work.
So an emulator (hardware or software) is the only solution.
by dr beep
Fri Oct 16, 2020 4:09 pm
Forum: Emulators
Topic: Zeddy emulator for ZX Spectrum
Replies: 17
Views: 14567

Re: Zeddy emulator for ZX Spectrum

I know this is quite an old thread, but this seems like an alternative method for what's been asked here, if a rather impractical one these days. Out of curiosity I was looking through the first issue of Sinclair Projects, just to see what it was all about. Lots of soldering, EPROM burning, make yo...
by dr beep
Mon Sep 28, 2020 12:48 pm
Forum: Development
Topic: What am I missing? - Calling RND from assembly.
Replies: 11
Views: 6333

Re: What am I missing? - Calling RND from assembly.

You need to test before you move the elevator up if on the new position of the elevator your player is.
If so, then move that up too.
by dr beep
Sun Sep 27, 2020 3:52 pm
Forum: Welcome Area
Topic: Hello from Genoa, Italy
Replies: 4
Views: 3582

Re: Hello from Genoa, Italy

Hello Tom, welcome,

To squeeze out every byte I suggest playing my hires games coded in 1K.
Available in the new games section.
by dr beep
Sun Sep 27, 2020 3:48 pm
Forum: Development
Topic: What am I missing? - Calling RND from assembly.
Replies: 11
Views: 6333

Re: What am I missing? - Calling RND from assembly.

This game has an RND using ROM, FRAMES and a RND-seed

B holds value between 1-255 on entry to set value between

download/file.php?id=6288

Routine is on page 8.