-
SpecOS progressOk, As you can all see, I'm back - and I've been working away on SpecOS for a while now. There's a few videos, which you can see on my blog: [url]h…
... just use labels and introduce PUSH var, POP var commands to allow ... -
Keyboard demoHere's a preview of a new keyboard for the special fx engine. Press any key to start/restart. [url]http://dl.dropbox.com/u/9498358/fire_keyboard.sn…
... MAKE_VECTOR_TABLE
drawch1: push af
push de
push hl
call ...
drawch2: push af
push de
push hl
call ... ), hl
lf18a: pop hl
pop de
pop af
ret ... -
Keyboard demoHere's a preview of a new keyboard for the special fx engine. Press any key to start/restart. [url]http://dl.dropbox.com/u/9498358/fire_keyboard.sn…
... musicdata
DRAWCH1: PUSH AF
PUSH DE
PUSH HL
CALL ...
DRAWCH2: PUSH AF
PUSH DE
PUSH HL
CALL ... ), HL
POPRET: POP HL
POP DE
POP AF
RET ... -
Keyboard demoHere's a preview of a new keyboard for the special fx engine. Press any key to start/restart. [url]http://dl.dropbox.com/u/9498358/fire_keyboard.sn…
...
DRAWCH1: PUSH AF
PUSH DE
PUSH HL
CALL ...
DRAWCH2: PUSH AF
PUSH DE
PUSH HL
CALL ... ), HL
POPRET: POP HL
POP DE
POP AF
RET ... -
Plastic Help. Plastic Hell.A few weeks ago I brought a very good condition push chair 2nd hand. It was ideal because it is designed to to be part of a travel system and goes wi…
... stock the part as the push chair is not one they ... />
I think one will pop up on ebay soon. I ... -
IF and control flow in machine codeHi everyone, Basic has a nice control flow like if statements. How can these be done in machine code since i cant find anything thanks
... /> ld a,3
loop push af ; save original value
rst 16 ; do print
pop af ; regain original value
Machine code issue...Hi Folks, My trials with MCODE continue and I am stuck. I wrote the following program in BASIC to simply POKE an attribute byte in to a "box" on th…
... done. HL=Address.
push HL ; save address
LD ...
BLPaintWidthExitLoop:
POP HL ; recover our left edge ... ; move 32 down
PUSH HL ; save it again
SAM programmingHi Can anyone provide any example hello world or graphics/sprite printing style machine code routines for the SAM? I can't seem to find anything rem…
... ,(lmpr) ; preserve system paging
push af
in a ... start of display
pop af
out (lmpr),a ...SAM programmingHi Can anyone provide any example hello world or graphics/sprite printing style machine code routines for the SAM? I can't seem to find anything rem…
... ) ; fetch current video paging
push af
in a ... -extended key pressed
pop af
out (vmpr),a ...Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…
... br /> call $28b2
pop bc ;HL=address of v ... ; =l$=v$(j)
push hl ; ROW j ADDRESS
pop hl ; ROW j ADDRESS
logical operators and the calculator stackI was wondering if there was a utility which would provide the list of commands needed for the ROM calculator to evaluate a logical expression. For e…
... CH_ADD) ;store CD_ADD
push hl ;in stack, so I ... later while evaluating.
pop hl ;Recover pointer to expression ... calculator stack.
pop hl
ld (CH_ADD), ...logical operators and the calculator stackI was wondering if there was a utility which would provide the list of commands needed for the ROM calculator to evaluate a logical expression. For e…
... ;store CH_ADD temporaly
push hl
... DE.
pop hl
push de ;Store address ... br />
pop de
push de
ld ...Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…
[B]STEP 3 -[/B] Now let's take a look at the quicksort algorithm, since we will need to properly understand it in order to find further improvements.
The basic idea behind the quicksort algorithm can be represented by the following pseudo-code ...Opinion on new 128K only gamesHello, Being new to the WOS community, I am unclear on the attitude towards 128K only software, that is; Is there a strong need to support the 48K m…
... /> ; ------------
.slow_down:
push edx ; ***SLOW VERSION***
jne .slow_across
pop edx
add esi ...Print text in assemblyHello, a perhaps simple question: I would like to print a text string on the screen and I wonder how to do that in the most easy way? I seem to re…
... .
[code]
SPRINT POP HL
LD A,(HL ... ,(HL)
INC HL
PUSH HL
AND A
SPRT_4 INC HL
PUSH HL
JR SPRINT
ForthTrying to search for FORTH programs and FORTH articles within the forum is proving to be a complete nightmare!! If I search for FORTH in Infoseek I …
... Forth like (ie: push and pop numbers off the stack), ... /> RESETCOLOURS
PUSH [NUM] VAR DAMSELS
PUSH [CONST] [NUM] ... VARPTR MINES
PUSH [NUM] VAR MINES
PUSH [CONST] [NUM] ... VARPTR MINES
PUSH [NUM] VAR MINES
PUSH [CONST] [NUM] ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... /> mov ebp,ecx
push edi
lea edi ...
jne .count
pop edi
; ------------
Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... option for load/store operations, "push" just becomes an alias for ... SP register plus offset, and "pop" the reverse. (In the assembler ... 'll define pseudo-instructions for push and pop that will use r28 ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... ). At first I used 'PUSH' and 'POP' as my code was register ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
...
.rect: push edx
push edi
mov ... ; ------------
; ------------
; ------------
.opti_down: push edx ; ***OPTIMIZED VERSION***
PUSH' and 'POP' and the large values ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... the limited use of 'PUSH' and 'POP' and the large values loaded ...Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…
... /> push af
push bc
push de
push hl
push iy
push ... /> pop ix
pop iy
pop hl
pop de
pop bc
pop ... ,af'
pop hl
pop de
pop bc
pop af
Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... GO TO 10
push hl ; save original HL
pop hl ; reclaim original HL
Printer Printing Problem (assembler)I've a program that outputs to the lower screen at various places, using a combination of calls to RST $10 plus OUT-NUM-1 and PR-STRING. It also call…
...
push bc
ld a," "
rst $10
pop bc ...
push bc
ld a," "
rst $10
pop bc ...Printer Printing Problem (assembler)I've a program that outputs to the lower screen at various places, using a combination of calls to RST $10 plus OUT-NUM-1 and PR-STRING. It also call…
...
push bc
ld a," "
rst $10
pop bc ...
push bc
ld a," "
rst $10
pop bc ...Hacking the O.C.P Full Screen Editor/AssemblerIf you have been reading my posts recently then you will know that I am eager to have the sourcecode I wrote for the Spectrum during the period 1988 …
... /> exx
push hl
push ix
push iy
ld ... ,0
pop iy
pop ix
pop hl
... tump02
exx
pop hl
ld sp,hl ... tump03
exx
pop hl
ld sp,hl ... tump04
exx
pop hl
ld sp,hl ...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…
... game I will try more pop/push method that someone once advised ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... =current print position
PUSH DE ; Save print position for ... 8 pixel lines
POP HL ; Get print position ... /> ; Set attribute
; -------------
PUSH HL ; Save print position
POP HL ; Get print position ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... =current print position
PUSH DE ; Save print position for ... 8 pixel lines
POP HL ; Get print position ... /> ; Set attribute
; -------------
PUSH HL ; Save print position
POP HL ; Get print position ...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…
... /> BUSY: ; wait until ready:
PUSH AF ; save AF
BUSY1 ... ; loop if still busy
POP AF ; restore AF
RET ... ; done
DELAY:
PUSH HL ; save HL
LD ... ; loop if not 0
POP HL ; restore HL
RET ...
