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Running out of fingers in AssemblyDear all, Still trying to learn Assembly and have put a few routines together. However, as my routines become a little more involved I find myself…
... like "ld a,(ix+d)" (19 cycles) is among the slowest ... /> ; error : (*) if buf == 0
; carry set, hl = 0
;
; (*) if ... invalid
; carry set, hl = 0, errno=EINVAL
;
; uses ... -
2x2 tile to attribute blocksHow do you go about converting a 2x2 tile to 16 x 16 attributes? Heres an example of the tile data I'm wanting to enlarge. [code] defb 255, 25…
... , 128, 65, 208, 3, 192, 19, 228, 7, 255, 255
colour LD C,0 ; POKED ; with the colour to ... -
2x2 tile to attribute blocksHow do you go about converting a 2x2 tile to 16 x 16 attributes? Heres an example of the tile data I'm wanting to enlarge. [code] defb 255, 25…
... , 128, 65, 208, 3, 192, 19, 228, 7, 255, 255
colour LD C,0 ; POKED ; with the colour to ... -
Must be missing the point - machine code... Hi Folks, Trying my hand at machine code again but falling at the first hurdle. I hand crafted the following to run at address 62000 and the co…
... ,
Sorry for the delay in getting back on this ... byte this bit changes from 0 to 1. The BIT instruction ... -
Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…
... ,-8: DRAW 20,0: DRAW 0,45: DRAW -20,19: DRAW -10,-8 ... ,8: DRAW -20,-19: DRAW 0,-45: DRAW 20,0: DRAW 10,8 ... /> PLOT 117,135:
DRAW 0,11: DRAW 10,8: DRAW ... :
DRAW 10,15: DRAW 0,-11:
RETURN
[/spoiler ... -
SupadriveHere's an MDR image of Supadrive. Works with Spectaculator, but I haven't tested it with any other emulators. [url="http://www.superfudge.demon.co.u…
... is made up of records 0,78,79 and 80 (the ... 69-78.
As record 0 does not exist, this makes ... "m";1;"Supadrive";1;23;19[/CODE][/INDENT]
2 ... -
Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…
... />
[code]100 BORDER 0: PAPER 0: INK 7: CLS
110 ... REM
140 PRINT AT 0,0;"Please wait, building string"
230 REM F=0 - PLOT, X=+ve, Y=+ve ... A$="P" THEN LET F=0: GO TO 330
310 ... -
ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…
... is done on a V1.0 board or, using a ... factory v2.0 board, all needed pins ... it since the eeprom has 19 address lines and the ... TTL connection like the 2.0 board".
Joystick aside, ... the V2.0 board is functionally and electrically ... -
Arrays in BASICHi so I'm making this crappy game and I wanna store the screen positions of some UDGs in in a 50x2 array cause I have 50 characters. So I made the ar…
... 23659,0:
PRINT AT 22,0;"AT 22,0 to ... 31";
"AT 23,0 to ...";TAB 27;"23, ... 31":
PAUSE 0: POKE 23659,2: STOP ... ";r;:
NEXT r: PAUSE 0: STOP
[/code]
... 23";i$;AT 0,0;"row 18";i$'(19)'(20)'"row ...
