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later today......[IMG]http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs909.snc4/72268_172079126142549_100000213882336_641184_4866225_n.jpg[/IMG] [IMG]http://sphotos.ak.f…
... invincibility when coming back to life.
3) The player direction is ... buffering , maybe the next game I will try more pop/push method that ... /> I have sent over the update to the Binman for checking/testing and ... -
LCD interfacingHas anybody interfaced [url=http://mdfs.net/Info/Comp/LCD]an LCD[/url] to a Spectrum? I'm toying with putting together an interface, a small 32x8 dis…
... />
LD HL,MESSAGE ; point to the message
CALL BUSY ; wait ... /> BUSY: ; wait until ready:
PUSH AF ; save AF
BUSY1 ... ; loop if still busy
POP AF ; restore AF
RET ... loop if not 0
POP HL ; restore HL
RET ... -
Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …
... runtime (this corresponds to the elimination of the 'screen' member of the 'struct sp1_update ... the most frequently used locals last can allow shorter push/pop sequences to access ... -
Supertest 128 - Loader QuestionI wonder if someone could explain (in simple terms please) :) , the purpose of the switch code. I see what is doing (going to 48k mode via spectrum)…
... 08E10h
;
diewith:
push af
ld iy,DDOFF ... to the second screen.
out (c),a
ei
pop af ... 0
dodos: push af
push bc
ld bc ... /> pop bc
pop af
call pciy
push af
push bc ... -
Converting TRD-Dos into TapHello, there are still many programs appearing on TRD-Dos or SCL format and users of normal Spectrum cannot run them. Of course I know about emulator…
... back to the original loader and check memory to find somewhere to put the following ... use the emulator's inline assembler to enter it:
[code]PUSH ... HL
POP IX ... -
yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
...
59 pop iy
60 pop ix
61 pop hl
67 pop de
68 pop bc
69 pop af
82 push af
83 push bc
84 push de
to restore state "jp popreg". The restore state also returns to the calling ... -
Sprites masterclassHi All, You guys are probably tired of explaining sprites but I'd like to clarify a few things if possible. I've sorted the vertical aspect of scro…
... ;being pressed?
pop af
rra
push af
call ... nc,mpl
pop af
rra
push af
call ... ,17 ;draws sprite, 8 lines to the sprite
ld ix,(seed ... -
Sprites masterclassHi All, You guys are probably tired of explaining sprites but I'd like to clarify a few things if possible. I've sorted the vertical aspect of scro…
... really just a minor adjust to the main sprite routine - but if ... ,a
put_blanksprite1 push bc
exx
pop bc
exx ... l,a
push hl
exx
pop hl
ret ... /> add hl,de
push hl
pop ix
ld a ... -
Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... Anonymous;511112]A year prior to the spectrum coming out, Sinclair ... like:
[code]
pop hl - each tile starting address ... any of the block copy operations or even PUSH to the display.[/QUOTE ... ]
I can use PUSH as ... -
Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
... in POP/PUSH, you set the stack to the data POP a value off the stack, change the ... stack pointer to the ... screen and PUSH ... -
RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... up one address
push hl ; save this address ... push hl ; save font address
; convert the row to the ... /> ; flag
push af ; store the carry flag
ld ... ; C holds the offset to the routine
pop af ; restore column ... -
Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
... a POP, so it's roughly the same speed as a PUSH/POP copy ... AF,AF' to get at all the registers. But then the full scope ... required if you want to synchronise with the contended memory cycles, so ... (NN),BC.
PUSHing to the screen in reverse order does ... -
Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
... a POP, so it's roughly the same speed as a PUSH/POP copy ... /> push hl ; 4T lost to contention
push de ; 5T lost to contention
push ... bc ; 5T lost to ... -
Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
Thanks for the explanation. So the only way using POP/PUSH is to use all the registers ... push, pushed the value off the stack and decreased the SP. I guess the instruction to ... make the above work would be PUSH (OLDSP), if ... -
50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... front of every ordinary PUSH to extend them all to the same 2-byte ... lines to get the different block types. That means I only POP each ... line of each pair of blocks once.
The ... -
SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…
... all the registers back again and
push de ; leap back to the operating ... system.
push af ;
call doit1 ;
pop af ;
pop ... -
SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…
... />
zap_loop:
push hl
push de
push bc
ld ...
ldir
pop bc
pop de
pop hl
inc ... ),a
ld bc,pause_2 ; to the end of row 12
ld c,l
pop hl
push bc
ret
50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... came out of the other thread on using PUSH to do scrolling. ... people were talking about using POP/PUSH to copy data, and how ... times to finish the pixels for the blocks, and twice more for the ... is replacing the sequences of PUSH statements in the main drawing ...50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... br /> loc_A1CC:
; go to the next screen line
; ... ,iy
pop bc
pop de
pop af
... :
jp push_8B00 ; jump to the series of PUSHes -- is blits ... push_8B00:
DUP 14
push af
EDUP
...Time difference for jumps and calls?Just interested (and possibly trying to distract myself from the more pressing problems in my sprite routine) and willing to risk a potentially daft …
... Push BC
Push HL
RET
NextPart:
;continues to the ... Still trying to get my head around
POP HL
to ask why use POP for HL, until ... I realised that your probably trying to capture the ...Small Machine Code Routines Which Maybe UsefulAs part of creating Flynn's Adventure in Bombland I created a lot of little routines to do all sorts of things. A lot of these I created based on inp…
... br /> ; ******************
; plot the character
; ******************
ld ... h for later
push bc ; 11t - store ... dec l; 4t - back to the start
djnz _PLOT2CHR_L2 ... br /> ; *************************************
pop bc ; 10t
ld ...enJine: a fast tilemap enginetile engine based on excellent work by Joffa Smifff. here you can download first tech demo. [url=http://ketmar.no-ip.org/tmp/enJine.tap]Get It Now![…
... structures. The user can redefine the locations of the data structures (subject to restrictions ... ) and then recompile the ... specs (such as generation of push/pop sequences from spriet data which ...Jet Set Willy II - collecting objectsThe POKE to reduce the number of objects you need to collect doesn't seem to work. [CODE]POKE 34686,1[/CODE] It looks correct. It changes the CP 150…
... - you have to go to the master bedroom screen (then the code is run ... a short bit of code to speed up JSW2:
LD A,B ;quicker than PUSH BC
LD L,(IX ... /> LD B,A ;quicker than POP BC
DJNZ $75EA
Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... HL up one address
push hl ; save this address for ...
pop hl ; the first address plus one of the
; extra ... to the base
; address to give the correct location
; in the streams table to ...Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... to the operating system.
DO_IT: PUSH HL
PUSH BC
PUSH DE
PUSH ... DOIT1
POP AF
POP DE
POP BC
POP HL
Serial protocol, help!Hi, simply trying to find best way to transfer programs from PC to real ZX Spectrum for testing purposes. Under Windows I tried using Spxfr and it w…
... presenting to you...the fruits of my labour...for the very ... zx spectrum...from theory to practice...the "115200 baud sender" ... 1. the main loop sends the screen (SCR) bytes to the pc.< ... br /> send: push bc
call _rs232_write
pop bc
dec ...
