-
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 …
... ld d,(hl)
pop af
ld l,a ... />
NotNewLine pop de
pop hl
pop bc
ret
screen location is in the same ... -
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 …
... point de at screen
pop bc ;pop graphics into c ... inc h
pop bc
ld (hl),c ... inc h
pop bc
ld (hl ... inc h
pop bc
ld (hl ... /> ex de,hl ;get screen addres
ld ... -
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 …
... ld de,16384 ;screen address
ld bc,string ;bc faster than ix ... /> pstring
ld a,(bc) ;get string byte
or ... ;point hl at screen
pop de ;pop graphics into e and ... bc ;next byte of string
ex de,hl ;get screen ... -
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 …
... 16384 ;screen address
ld bc,string ;bc faster ...
ld a,(bc) ;get string byte
screen
pop de ;pop graphics ... bc ;next byte of string
ex de,hl ;get screen ... -
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 …
... ,16384 ;screen address
ld bc,string ;bc faster than ... hl at screen
pop de ;pop graphics into ... bc ;next byte of string
ex de,hl ;get screen ... entry
ld a,(bc) ;get string byte
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 …
... ,16384 ;screen address
ld bc,string ;bc faster than ... hl at screen
pop de ;pop graphics into ... bc ;next byte of string
ex de,hl ;get screen ... entry
ld a,(bc) ;get string byte
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 …
... ld de,16384 ;screen address
ld bc,string ;bc faster than ix ... ;point de at screen
pop de ;pop graphics into e and ... bc ;next byte of string
ex de,hl ;get screen ... />
entry ld a,(bc) ;get string byte
add ...SUPER INPUTA couple days ago I searched for an "INPUT string" routine that I could use in Assembly programs and supported multiple lines, but I found none. Thus…
... (reset workspace)
pop bc
push bc
inc bc
call $0030 ... bc
ld a,2
ld (DF_SZ),a ;reset lower screen ...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 …
... : dehl = long
; bc = char *buffer
; carry = write leading ... : dehl = long
; bc = char *buffer
; carry = write leading ... :
pop hl
pop bc
pop de
ex ...64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…
... br /> ;; First we fill screen 0 with the pattern and ... :
push bc
;; Show screen 0 for exactly ... 896
;; Show screen 1 for exactly 224x4 = 896 ...
;
pop bc
djnz l1
64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…
... br /> ;; First we fill screen 0 with the pattern and ... l1:
;; Show screen 0 for exactly 228x4 = ... 912
;; Show screen 1 for exactly 228x4 = 912 ... 50 - 5 = 852
pop bc ; 11
; 39 ...64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…
... />
POP DE ;MV7
POP BC ;MV8
POP AF ;MV9
POP IX ... LD HL,(CurrentLineStart) ;next line screen address
ADD HL,DE ... )
JP M2 ;redraw the screen again
;--------------------
...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…
... doit1 ;
pop af ;
pop de ;
pop bc ;
pop hl ;
ret ... /> ld (chrad), hl ; on the screen and calculate the address
and a ; screen one byte at a time ... left hand side of the screen.
ld a, (coords_y) ;< ...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…
... /> dontprint
pop af
pop bc
pop de
pop hl
ei ... with hl pointing at the screen address
ld de, ... with hl pointing at the screen address
ld de, ...Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…
... a direct effect on the screen display.
The complicated ... black paper colour down the screen.
In the spin ... the road down the screen we copy the screen attribute bytes to ...
lddr
pop bc ;retrieve score
pop hl ;retrieve road posn ...Mini scroll routineI'm looking for a routine that scrolls a small section of the screen downwards and replaces it with nothing, 2 x 2 charcter blocks to be precise, to …
... contents of B for different screen sizes.
If you ... ;this way it looks the screen is being pulled down with ... says on the tin!
pop bc ;get counter back
djnz ... something similar but uses a screen address table and manipulates the ...Help needed...I am at my wits end with this pigs ear of a routine, can anyone simplify it and make it work as it should? Basically it should make the characters '…
... along the top of the screen, and moves it in 4 ... we're in the upper screen
ld a,21 ; ... it'll be off the screen for longer than it is ... exit, but rem we PUSHed BC, must POP it
ld ( ... print_string ;PRINTS ON
exit pop bc
djnz loop
;< ...UDG in AssemblyHello there my fellow WoS'ers I am currently having a play with z88dk and PASMO and would like to have some fun with some UDG's so is there a tutor…
... character row of the pixel screen. The second one, not ... addition). This gives you the screen address in DE.
screen.
[CODE]ORG ...
pop hl
pop de
pop bc
pop af ;restore registers ...UDG in AssemblyHello there my fellow WoS'ers I am currently having a play with z88dk and PASMO and would like to have some fun with some UDG's so is there a tutor…
... br /> ld d,(hl) ;de = screen row address fetched from table ... back in de
pop hl ;recover graphic address in ... /> inc d ;next byte of screen, +256
djnz loop ; ...
pop hl
pop de
pop bc
pop af ;restore registers ...my tiny intros[IMG]http://pouet.net/screenshots/60493.png[/IMG] [url]http://pouet.net/prod.php?which=60493[/url] the following work will appear behind Demosplash…
... attribute 5 on ZX'screen is defined as the ... A
INC IX
POP BC
DJNZ L9DD6
... 4
lp1:
pop de: add hl, de: djnz ... /> ld bc, # 20: sbc hl, bc
add hl, bc; another ... a
bra1:
pop hl: ld (hl), a: ...Asking for help: ZXBC to ASM routine translationHallo, In order to save some bytes and gain speed, I'm asking for translation of a very simple ZXBC routine to Assembler [code] sub light(x as uinteg…
... /> pop hl ;return address
pop de ;x?
pop bc ;y?
pop af ... hl,28
sbc hl,bc
jr c, outofbounds
ld de,@buffer
add hl,de
Asking for help: ZXBC to ASM routine translationHallo, In order to save some bytes and gain speed, I'm asking for translation of a very simple ZXBC routine to Assembler [code] sub light(x as uinteg…
Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …
Removing the "PUSH DE : POP DE" gives a square standing ... can plot across the full screen area. (The two out-of ... need to return via the "POP HL : POP BC".)
The circle ...calculator and sinusok, look at the Sysel's routine: [PHP]3 5b00 *s 4 5b00 tabsin = #7000 03 mksin 19.11.1995 Busy soft …
... br /> begin
ld bc,#5b00
ld hl,0 ... y
push bc
exx
pop hl
pop hl
ld a ... br /> call 022B1h ; calc screen BC=y.x
ld b ... ), a
next_c:
pop bc:inc c:jr nz,m1 ...Memory diagnostic toolIs there any sort of memory diagnostic tool for examining .Z80 files so I can easily identify large areas of blank memory? Scrolling through ZX Spin…
... a key when the screen is full. If ... br />
NEXT: pop hl
inc hl< ... /> push bc
call INC_X
pop bc
pop hl
and a
sbc hl,bc ...
