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IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…
... br /> 0025 : ed41 OUT (C),B
0027 : ... ed59 OUT (C),E
0037 : 3e00 LD A,0
0039 : 3d DEC A
003a : ed79 OUT (C ... -
Help with 1-bit sampled soundHi all, I've been sent over this way from the CPC Wiki forums as you guys may be able to help me more specifically with a programming query. Firstly…
... ,(hl) inc l out (c),b 23
jp c,EXIT 10 33 ... /> 0,0,0,0,0,0,0,0
0,0,0,0,0,0,0,0,24
0,0,0,24,0,
joefish
March 2014
Development
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SCF/CCF flags - new discoveryI can't believe that no one is interested in discussing the additional, previously undocumented internal state of the Z80 CPU I have discovered recen…
... . The first release of Fuse (0.1.0) was in July 1999 ... trap of implementing the CMOS 'OUT (C),255' without the quirky 'LD ... -
Robocop 3 and Spectrum 128K toast-rackHi all, we are going on with the tests on the new 128K emulator for the V6Z80p board, and we have found something odd: Robocop 3 (designed for the 12…
...
LD A,3
OUT (C),A
and that ... the loader back to page #0 before loading the game. I ... -
TAP version of CrosswizeIs it possible to create a TAP version of Crosswize with all levels? On the tape or a TZX file, the levels are in the same block and a custom loader …
... :
ld bc,32765
out (c),a
push bc
ld a,$10
out (c),a
scf
ret ...
db 0,0,0,0,0,0
org 54172
db 0,0,0
org 54178
db 0,0,0[/CODE]
Making noises with the AYHow do you go about making noises from the AY chip in machine code? I'm wanting to make a pulsating humming noise that increases in volume as you ge…
... DEFB 8,0
DEFB 9,0
DEFB 10,0
... br /> OUT (C),D
LD BC,49149
OUT (C),A< ...
LD A,0 ; volume setting 0-15 max!
...Making noises with the AYHow do you go about making noises from the AY chip in machine code? I'm wanting to make a pulsating humming noise that increases in volume as you ge…
... LD D,(HL)
OUT (C),D
LD BC,49149 ... LD D,(HL)
OUT (C),D
INC HL< ... DEFB 8,0
DEFB 9,0
DEFB 10,0
...Making noises with the AYHow do you go about making noises from the AY chip in machine code? I'm wanting to make a pulsating humming noise that increases in volume as you ge…
... ,12
OUT (C),D ;
LD BC,49149
OUT (C),A
0 ; channel 1, volume (0-15)
DEFB 9,0 ; channel 1, volume (0 ...Making noises with the AYHow do you go about making noises from the AY chip in machine code? I'm wanting to make a pulsating humming noise that increases in volume as you ge…
... />
LD A,15 ; volume (0 silence ... 15 loudest)
PulseVolume ... ,65533
OUT (C),D ;
LD BC,49149
OUT (C),A ; set ...Making noises with the AYHow do you go about making noises from the AY chip in machine code? I'm wanting to make a pulsating humming noise that increases in volume as you ge…
... ,0 ; channel 1, volume (0-15)
DEFB 9,0 ; channel 1, volume (0 ... ,65533
OUT (C),D ;
LD BC,49149
OUT (C),A ; set ...LOAD "" CODE in machine code/store 128 bank dataHow do you LOAD "" CODE from machine code? I have written the following MC routine that fits into a REM statement in a basic program. I want to cal…
...
ld bc,32765
out (c),a
; load 16384 ... 0
ld a,$10
ld bc,32765
out (c),a ...
ld bc,32765
out (c),a
ld hl,32768 ...
ld bc,32765
out (c),a
ei
ret ...LOAD "" CODE in machine code/store 128 bank dataHow do you LOAD "" CODE from machine code? I have written the following MC routine that fits into a REM statement in a basic program. I want to cal…
... ink (7) on black paper (0),
; bright (64).< ... br />
ld a,0
ld (23624),a ... ;16+6=22
out (c),a
... ld a,#10 ;16
out (c),a
[/B]
...Banked memory running slower?I've just compiled a TAP which includes bank6, it loads ok, but the routines that are paged in run slightly slower. The Z80 snapshot has no such pro…
... bc,#7ffd
swap
out (c),a
ret
; 1 ... (hl),#fd
ld de,0
call mem1281
ei ... br /> pop af
ld c,a
mem1282
pop ... equ $-2
ld a,c
jr mem_48
... br /> halt
mem_tst db 0
[/CODE]Alkatraz Protection System - "How to" and compo?I'm thinking about writing a "how to" regarding the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0020807"]Alkatraz Protection System[/URL].…
... attempts to page in ROM 0 and check for a specific ... , $7ffd
xor a
out (c), a
ld a, ($0010 ...
ld a, $10
out (c), a
loop rlc (hl ...Which emulators support ULA+Tried ZX Spin 7.0, but its unstable. Tried to drag and drop .scr files onto it, but it comes out all wrong. Don't understand the TAP file that's sp…
Spin 0.7S is fine for ULA+ ... few lines, a couple of OUT(C),A instructions and you should ...Which emulators support ULA+Tried ZX Spin 7.0, but its unstable. Tried to drag and drop .scr files onto it, but it comes out all wrong. Don't understand the TAP file that's sp…
[QUOTE=Code Monkey;805970]Spin 0.7S is fine for ULA+ ... few lines, a couple of OUT(C),A instructions and you should ...Which emulators support ULA+Tried ZX Spin 7.0, but its unstable. Tried to drag and drop .scr files onto it, but it comes out all wrong. Don't understand the TAP file that's sp…
... 0
ld c,ZXIPORT
LoopLoadPalette ld b,ULAPLUSADDR
out (c ... ld b,ULAPLUSADDR
out (c),d
ld b, ...128k toast rack diagnosisHi - I recently won a 128K toast rack, and have got a Retroleum smart card. I've tried a couple of games and all seems fine...-ish.<div><br></div><di…
... /> ; Enable SRAM page 0 at 0x2000-0x3fff
0168 ED79 OUT (C), A
; ... OUT (C), A
; Page in RAM page 0, ...
0176 ED79 OUT (C), A
From ...40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…
... ; shift is done
ld c,#0x00 ; c=0
pch_shift:
srl ... acc.
and #0x07 ; mask out 00000111
or #0x40 ; vmem ... /> rla
and #0xe0 ; mask out 11100000
ld l,a ...Renegade by ImagineOn the speccy 128/+2 you got ingame music but not on the +2a/b/3 (paging issue?), although all the 128k's had music on the menu page. Was there ev…
... at address $2000 between ROM 0 and ROM 1, and stores ... 11 04 00 $0ats
out (c), d ; 7c0f ed 51 $0cts ... , (hl) ; 7c11 7e $07ts
out (c), e ; 7c12 ed 59 $0cts ... at address $2000 between ROM 0 and ROM 1
< ... on
[code]POKE 31743,0[/code]IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... have a IN or OUT instructions. And the high ...
Two examples:-
OUT (C),r - where r is register ... output port address. Register C supplies address bits A0 ... to A15.
OUT (n),A - where n ... a 8 bit address between 0 and 255 (one byte ...Vega ARM SOC?I read that the core of the new Vega was an ARM SOC. I thought it would have been an FPGA. But it seems it's an ARM running an emulator. Anyone kn…
... port FEh
ld a,0 ;initial border color
... 310 for 128K)
out (c),a ;12T
inc ... ;start all over again
out (c),a
inc a
Vega ARM SOC?I read that the core of the new Vega was an ARM SOC. I thought it would have been an FPGA. But it seems it's an ARM running an emulator. Anyone kn…
... a,8 ;border 0 or paper 0
out (c),a
... NewFrame rept 311
out (c),a
inc a
out (c),a
inc a< ...ZX Uno programming competition[b]Rules[/b] - The game tematic is free. The languaje can be english or spanish. - You must use Radastan video mode in the game as principal. - …
... /> ld e,0
BucPaleta out (c),e
... 0
ld bc,0bf3bh
ld a,64
out (c ... /> xor a
out (c),a
...
