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How to add speech to a program?Is it possible to add speech to a machine code program? And with possible I mean with relative ease. Hardware could be 128k. Is there some utility …
Is it possible to add speech to a machine code program? And with possible I mean with relative ease. Hardware could be 128k.
Is there some utility around to record something and then be able to play it from inside a program? -
Problem with rotating procedureHi folks! I wrote a proc in z80 asm, based on: x' = x * cos (z) - y * sin (z) y' = x * sin (z) + y * cos (z) I used a precalculated table of sin a…
... : add hl,hl
rla
jr nc,fin21
add hl,de
adc a,0 ... /> ld c,d
add hl,bc
adc a,0
ld d ... a,e
add a,c
ld e,a
ld a,d
adc a ... -
SimCoupe 1.0 released[size=-2](for those of you that don't read CSS)[/size] SimCoupe, the SAM Coup? emulator, has been updated to version 1.0. This major release adds ma…
... re still a SAM virgin, download a copy today! A few sample ... - Added partial scanline support for a more natural looking display
ADC HL,rr incorrectly setting N flag
- Fixed ADD IX/IY ... on Czech keyboards, which require a shift modifier
- ... -
Urgent Help needed to fix this: calling all machine code gurusI am currently trying to write tutorials on the amazing Orfeus music composer by Proxima which allows you to do multi channel music through the beepe…
... a,h
adc a,d
cp e
adc a,d
add hl,bc ...
adc a,d ...
ld e,b
adc a ... -
A fast DRAW routineI was investigating how to speed up the line drawing for the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=20225"]BASIC compiler[/URL]…
... While loop
exx
add hl, de ; error -= dY
... ld a, 8
add a, h
ld h, a
ld a, ... 1
ld (hl), a
ex af, af' ; ... ld h, a
ld de, (SCREEN_ADDR)
add hl, de ;; Final ... -
rotating HL left through CarryI've tried this several ways, and it works for a while, then a particular value has a bit set in an inconvenient place and it all goes to pot. Eg: "…
... it works for a while, then a particular value has a bit set ... A", then four repeats of "RL H : RL L"; or ADC HL,HL; with ... -
Full 16*16-digit BASIC multiplicationI liked Andre Adrian's 32-bit long multiplication routine so much that I decided to a decimal version. After all, 2^63 is only 9223372036854775808, a…
... /> 1120 LET I=0 : REM ADD HL,DE ; RESULT += MPD
1121 ... +I: LET I=0 : REM ADC HL,DE
1141 LET L ... a=1 TO 32: IF a$(a)="0" THEN NEXT a
1393 PRINT "= "'a$(a ... TO)'32-a+1 ... -
Movin And A Groovin Horizontal Flip improvementOn the left is the flip horizontal portion from Andy Pennell'S excellent Movin' & a Groovin' machine code screen routines from Your Spectrum #19 (Oct…
... (HL),A ; poke flipped byte
ADD HL,DE ADD HL,DE
ADD IX,DE ADD IX ... -
Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…
... c,NoAddHi
add a,30h
ld (hl),a
NoAddHi and 0fh ... /> add a,3
and 0fh
ld c,a
ld a,(hl)
I don't think I'm getting the $22AA Pixel-Add rom routineDear all, I'm misunderstanding how the PIXEL-ADD rom routine works. My code... [code]ld b,175 ld c,1 call $22AA ld (hl),a ret[/code] So…
... m misunderstanding how the PIXEL-ADD rom routine works.
... /> call $22AA
ld (hl),a
ret[/code]
HL containing $6400 and the ... bit 6 (does this mean A=64?)
... So I'm a bit confused why the code ...A sped up pixel-shift routine for 1-byte–wide spritesHere’s an optimized (for speed) real-time sprite shifting routine for sprites that are one byte wide. It uses no memory variables for storage of inte…
... C
ld (hl),a ;place it on screen ... /> ld a,(hl)
xor b
ld (hl),a ;place ... a,l ;else, load A with L
add a,32 ;add ... 32 to it
ld l,a ... jr c,msl_shift_done ;if ADD A,$20 results in overflow, ...A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…
... ;pair, such as HL and zeroize the high byte ... /> ; ld (control_count+1),hl ;inject # of bytes to ... to the next
add ix,de ;table row< ...
ld hl,dummy_key ;point HL to the code of ... key
ld (hl),a ;now HL points to (dummy_key+BC), ...Tricks to make mirror image of a graphic?I've been working on a sprite routine for lots of sprites and animations. I'm only storing right facing graphics, and converting them to left facing.…
... br /> loop: ld a, (de)
ld (hl), a
inc h ...
ld a, c
add a, %10000000
ld c ... a, c
add a, %00000001
ld c, a
write: ld (hl), ... br /> loop2: ld a, (de)
ld (hl), a
inc h ...Last Problem in Chapter 3 of Toni Baker's Mastering Machine Code on your ZX Spectrum.Chapter 3 of this great book is all about how to use the registers and covers the operations LD, ADD, ADC, SUB, SBC, INC, DEC, SCF and CCF. The la…
... covers the operations LD, ADD, ADC, SUB, SBC, INC, ... The last task asks a program be written to ... HL
LD L, E 6B
ADD A, ... 00 C600 Reset CARRY
SBC HL, BC ... HL(DE) then CARRY is 1, otherwise 0
ADC A,A 8F Set A ...Sort 2 byte words (x, y) on ypos, also question about swap (DE), (HL)Well that was a lot of debugging ;) But if you want a routine which takes an array of 16 byte words x, y and then sort them on y (ignoring x), I'm…
...
ld e, a
add hl, de
inc hl
ex af ...
ld e, a
add hl, de
inc hl
ex af ... root
push hl
ld e, a
add hl, de
push ...Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... /> ld l, a
add hl, hl
add hl, hl
add hl, hl ; HL = char * 8
add hl, de ; + ... /> daa
add #A0
adc #40
ld (de), a
inc ... /> ld e, a
add hl, de
ld a, (hlline routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... me ;o)
ld hl,tad_asc
ld de,# ... ld (hl),e
inc hl
ld (hl),d
inc hl
inc d
ld a ... /> ld d,a
ld a,e
add a,#20
... ,filltab
ld a,d
add a,8
ld ...line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
...
bit1:
ADC A,A ; first time carryflag in A, then double it ... nz,nexty
ld a,l
add a,32
ld l ...
or_pixel3:
or (hl)
ld (hl),a
fim_vert:
retAdvice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…
... characters. Once you rotate a 2 character wide sprite ... 16 bits using 'add hl,hl; ex de,hl; adc hl,hl', etc and calculated ... for smooth scrollers this is a requirement. Your graphics routines ... also have a bankswitched display but at a different location ...An MC question (sorry, there's no MC forum to post to!)Ok, still struggling with learning MC - but am getting there. I just can't find anywhere on the web / in books that explains how to do arrays in MC.…
... d,0
add hl,de
ld a,(hl)
; a = array index ... /> add a,MyArray%256
ld l,a
ld a,0
adc a,MyArray ... /256
ld h,a
ld a,(hl)
; a = index ...Amiga MOD on ZX SpectrumWell, there were several question about music matters on WOS lats times, so I decided to describe some of my 'adventures', heheh, with MOD playing on…
... ,pitchint ; 8 bit integer
adc hl,bc ; add byte displacement
; to ... /> add a,(hl)
rra
add a,(hl)
rra
add a,(hl)
rra
add a,(hl)
Amiga MOD on ZX SpectrumWell, there were several question about music matters on WOS lats times, so I decided to describe some of my 'adventures', heheh, with MOD playing on…
... /> add hl,bc
ld (sample_pos_lo+1),hl
ex de,hl ; now hl = ... br /> ld bc,0
adc hl,bc ; carry to high byte ... restrict it to a certain page...
ld a,(hl) ; fetch ... of lookup table
ld a,(hl) ; final sample output level
Amiga MOD on ZX SpectrumWell, there were several question about music matters on WOS lats times, so I decided to describe some of my 'adventures', heheh, with MOD playing on…
... sample
lsbtbl:
add a,lsbtbl ; lsbtbl = 64*(volume ... ld l,a
ld e,(hl)
add ix,de< ... :
ld a,pitchfrac
remainder:
add a,remainder
... a
ld l,pitchint
ld h,d
adc hl ...Amiga MOD on ZX SpectrumWell, there were several question about music matters on WOS lats times, so I decided to describe some of my 'adventures', heheh, with MOD playing on…
... ld l,a
ex af,af'
add a,(hl) ; add sample to total ... a
ld l,pitchint
ld h,d
adc hl ... ,bc
ld (ptr+1),hl
msbendaddr:
ld a,msbendaddr
adc a,h
jp m ...Can Anyone explain sprites in Jet Pac/Atic Atac etcJet Pac was 16k, and yet the sprites were impressively fast. I notice they had a slight flicker at times, but were notmally pretty flicker free. W…
... : add hl,hl
adc a,a
Left3: add hl,hl
adc a,a
Left2: add hl,hl
adc a,a
Left1: add hl,hl
adc a,
robpearmain
October 2004
Development
Help needed to speed up functionCan anyone help me to re-factor this code snippet. The "MAP" section holds information about which tiles go where on the screen (handled by another f…
... /> LD (HL),A
EX AF,AF'
LD A,31
ADD A,L ... A,32
ADD A,L
LD L,A
LD A,0
ADC A ...Help needed to speed up functionCan anyone help me to re-factor this code snippet. The "MAP" section holds information about which tiles go where on the screen (handled by another f…
... HL
LD (HL),A
EX AF,AF'
LD A,31
ADD A ... A,32
ADD A,L
LD L,A
LD A,0
ADC A ...Help needed to speed up functionCan anyone help me to re-factor this code snippet. The "MAP" section holds information about which tiles go where on the screen (handled by another f…
... HL
LD (HL),A
EX AF,AF'
LD A,31
ADD A ... holds 0
ADC A,H
LD H,A
{ this ...
