... />
push bc
push de
exx
push bc
push de
push hl ... copying to screen. thats where you get real benefit from push/pop ...

... LD IX, IX_TABLE
LD BC, 64 * 256 + 192 ; ... byte of start of screen buffer; 192 used to ... ; Map DE to pixel in screen buffer (HL)

... add 16384 to point to screen buffer
LD A, ... br /> ; Bit positions within screen byte to set
. ...

... /> pop bc
pop bc
pop bc
pop bc
pop bc ;; compiler ... ; save start of token
push bc ; save char **string_ptr + 1
screen configuration or memory map.

... /> push bc
push de
push hl
push af
push ix ... jp z,FINISHED
push ix
pop de ... will stop after each screen has displayed so ... that part of the screen, just now it' ...

... can be sustained the full screen though. The variation doesn't ... /> push bc
push bc
push bc
push bc
push bc
push bc
push bc
push bc
push bc
push bc

... code]Print push bc
push hl
push de
push af
pop bc
ret
... Best case (the new screen location is in the same ...

... /> [CODE]EDIT: push hl
push bc
ld a,$ ... workspace)
pop bc
push bc
inc bc
call $0030 ... push bc
ld a,2
ld (DF_SZ),a ;reset lower screen ...

... dehl = long
; bc = char *buffer
; carry = write ... push bc
ld bc,-100+256
push bc
ld bc,-1000+256
push bc ... dehl = long
; bc = char *buffer
; carry = write ...

... understood a sweep across the screen was 224 T states.
push bc 11
ld bc, 0 ; columns 15 and 16 10
push bc ... 11
ld bc, 0 ; columns 13 and 14 10
push bc ...

... /> ;; First we fill screen 0 with the pattern and ... bc, 512
ldir

;; First we fill screen ... l1:
push bc

;; Show screen 0 for exactly ... 896

;; Show screen 1 for exactly 224x4 = 896 ...

... /> ;; Show screen 0 for exactly 228x4 = 912 TS

push bc ; 10 ...

ld a, 0 ; 7
ld bc, $7ffd ...

... ;set MA13,MA14,MA15 (screen addresses)
LD ... PUSH IX ;copy MV10
PUSH AF ;copy MV9
PUSH BC ... HL,(CurrentLineStart) ;next line screen address
ADD HL ... br /> JP M2 ;redraw the screen again

...

... /> ld (chrad), hl ; on the screen and calculate the address
ld bc, 0xff03 ; mask
push bc ; save mask
and ... on the
and a ; screen one byte at a time ... left hand side of the screen.
ld a, (coords_y) ;

... /> push hl
push de
push bc
push af
push af ... hl pointing at the screen address
ld ... hl pointing at the screen address
ld ...

... a direct effect on the screen display.
The complicated way ... black paper colour down the screen.
In the spin ... score at GAMEOVER insert line21, 'push bc; save score'. Replace line 57 ... the road down the screen we copy the screen attribute bytes to ...

... contents of B for different screen sizes.

... once to do whole screen
ld hl,16384 ... way it looks the screen is being pulled down ... display file
scrlp2 push bc ;b is affected by ... similar but uses a screen address table and manipulates ...

... 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 ... possible per row
loop push bc
ld b,20 ;REMOVE ... ;PRINTS ON
exit pop bc
djnz loop
;< ...

... character row of the pixel screen. The second one, not ... addition). This gives you the screen address in DE.

screen.

[CODE]ORG ... function
push af
push bc
push de
push hl ;store all ...

... function
push af
push bc
push de
push hl ;store all ... = address of character graphic
push hl ;store for later
ld d,(hl) ;de = screen row address fetched from table ... /> inc d ;next byte of screen, +256
djnz loop ; ...