... ) ; e = low byte of screen address
inc hl ; hl points ... screen address
ld d, (hl) ; d = high byte of screen address ...
ex de, hl ; hl = screen address of ... add hl, de ; adjust screen address for col
ld b ...

... ) ; e = low byte of screen address
inc hl ; hl points ... screen address
ld d, (hl) ; d = high byte of screen address ...
ex de, hl ; hl = screen address of ... add hl, de ; adjust screen address for col
ld b ...

... ) ; e = low byte of screen address
inc hl ; hl points ... screen address
ld d, (hl) ; d = high byte of screen address ...
ex de, hl ; hl = screen address of ... add hl, de ; adjust screen address for col
ld b ...

... ) ; e = low byte of screen address
inc hl ; hl points ... screen address
ld d, (hl) ; d = high byte of screen address ...
ex de, hl ; hl = screen address of ... add hl, de ; adjust screen address for col
ld b ...

... copy parts of the screen then save them to ... know about the spectrum wacky screen layout for that though). ... to work out the screen address instead of calculating it ... the edge of the screen to the next line ... off the bottom of the screen.

See ...

... ) ; e = low byte of screen address
inc hl ; hl points ... screen address
ld d, (hl) ; d = high byte of screen address ...
ex de, hl ; hl = screen address of ... add hl, de ; adjust screen address for col
ld b ...

... copy parts of the screen then save them to ... know about the spectrum wacky screen layout for that though). ... to work out the screen address instead of calculating it ... the edge of the screen to the next line ... off the bottom of the screen.

See ...

... ) ; e = low byte of screen address
inc hl ; hl points ... screen address
ld d, (hl) ; d = high byte of screen address ...
ex de, hl ; hl = screen address of ... add hl, de ; adjust screen address for col
ld b ...

... column, one which calculates the screen address of the next line in ... which always looks up the screen address from a table each row ... 8x8 sprite anywhere on the screen (except if it goes off ... the screen).

I'll also ...

... -coord
; look up screen address from the table
ld ... hl
; look up screen address from the table
ld ... hl
; look up screen address from the table
ld ... br /> ALIGN 256
; screen address table. This must be 256 ...

... 't like this

; screen address table. This must be 256 ...

... hl
; look up screen address from the table
ld ... hl
; look up screen address from the table
ld ... hl
; look up screen address from the table
ld ... br /> ALIGN 256
; screen address table. This must be 256 ...

... l, b
; look up screen address from the table
ld ... /> ; blit 8 pixel row to screen
ld a, (de)

... l, b
; look up screen address from the table
ld ... /> ; blit 8 pixel row to screen
ld a, (de)

... row on the screen (must be entirely on screen again).
... push hl
; look up screen address from the table
ld ... ; blit 16 pixel rowdata to screen in cells at column C ... e
; next row, calculate screen address
pop hl
; ...

ORG 32768
FONTBASE EQU #3c00

main:
; make Spin disassembler dissassemble first real instruction correctly
nop
nop
nop
nop
; air supply
airloop ld ix, spr_8x8
ld hl, txt_air< ...

... /> push hl
; look up screen address from the table
ld ... /> ; blit 16 pixel rowdata to screen in cells at column C ... /> ; blit 16 pixel rowdata to screen in cells at column C ...

[code] ORG 32768
FONTBASE EQU #3c00

main:
; make Spin disassembler dissassemble first real instruction correctly
nop
nop
nop
nop
; air supply
airloop ld ix, spr_8x8
ld hl, ...

... a shorter lookup table (one screen address per row instead of per ... -> offset of row in screen (= tbl_rows + row*2)
sla ... b, l
; look up screen address from the table
ld ... shorter table (just the row screen addresses) -> this won' ...

Works for me (TM)

[url=https://postimg.cc/K1dYS56w][img]https://i.postimg.cc/SKKY9TDS/worksforme.png[/img][/url]

[code]
ORG 32768
FONTBASE EQU #3c00
ATTRIBS EQU #5800

main:
; make ...

... hl
; look up screen address from the table
... hl
; look up screen address from the table
... br /> ; next row, calculate screen address
pop hl
; ...
ALIGN 256
; screen address table. This must be 256 ...

... hl
; look up screen address from the table
... hl
; look up screen address from the table
... br /> ; next row, calculate screen address
pop hl
; ...
ALIGN 256
; screen address table. This must be 256 ...

... hl
; look up screen address from the table
... hl
; look up screen address from the table
... br /> ; next row, calculate screen address
pop hl
; ...
ALIGN 256
; screen address table. This must be 256 ...

... writing etc)
SCREEN EQU $4000 ; Location of screen
ATTRIBS EQU ... /> call 3503

;*title screen graphic's tile placement data ... ; attrib to set when clearing screen
cls:
di ;disable ...

... ) ; e = low byte of screen address
inc hl ; hl points ... screen address
ld d, (hl) ; d = high byte of screen address ...
ex de, hl ; hl = screen address of ... entry table for the screen address lookup is really only ...

... ) ; e = low byte of screen address
inc hl ; hl points ... screen address
ld d, (hl) ; d = high byte of screen address ...
ex de, hl ; hl = screen address of ... entry table for the screen address lookup is really only ...

...
; look up screen address from the table
... br /> ; next row, calculate screen address
pop hl
... br /> ; next row, calculate screen address
pop hl
...
ALIGN 256
; screen address table. This must be 256 ...

... hl
; look up screen address from the table
... hl
; look up screen address from the table
... br /> ; next row, calculate screen address
pop hl
; ...
ALIGN 256
; screen address table. This must be 256 ...

... br /> ; this points at the screen RAM at the moment. You ...
SCRBUF_BASEADDR is just the screen address, might want to change it ... not draw directly to the screen.
WINDOW_ stuff is ... the attributes (straight after the screen)
STRIPES set to 1 ...