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LDIR, dynamic DE

by BlueCrystal on 14-01-2023, 00:22
Score: 172.41 %, Type: Forum topic , Comments: 2 comments
ld bc,32 ; 32 characters per line ldir ; DE<-HL until BC=0 I am trying to get ... as well. Like for example: ; a = page ld h,0 ld l,a add hl,hl ; x 32 add hl,hl add hl,hl add ... ldir ; DE<-HL until BC=0 By not modifying de but using bc as addend instead, one can ...

Assembler with possibility to create pseudo mnemonics

by Accumulator on 12-01-2023, 16:13
Score: 172.34 %, Type: Forum topic , Comments: 14 comments
in Carry 0 WRITEVD: SCF accessing this carry=1 ex af,af SOMEROUTINE ex af,af ... > IFDEF ADD_N16_ARG1_TEST_de 718 C8BF E5 > push hl 718 C8C0 21 3C 12 > ...

Boot from disk

by aoineko on 07-01-2023, 23:13
Score: 172.25 %, Type: Forum topic , Comments: 14 comments
in by the boot sector code) by using 0xf37d as the entry point. Note that if you are using a custom boot sector ROM BIOS will be in page 0 instead of RAM when the boot sector code is called the first time (carry ... sector code is called again, this time with RAM in page 0, and when the standard boot sector code ...

BASIC - detect the presence of a disk

by skumlerud on 05-01-2023, 21:31
Score: 172.2 %, Type: Forum topic , Comments: 25 comments
was to use dskf(0), which should throw an error if the function call or disk isn't available. And this works fine with plain MSX BASIC, both on an emulator (tested BASIC 1.0 with and without Disk BASIC, and BASIC 2.0 with and without a floppy available) and on my SVI738 with BASIC 3.0. However, with my ...

RESTORE I -> undefined line number

by The Apeman on 05-01-2023, 19:50
Score: 172.21 %, Type: Forum topic , Comments: 4 comments
from which the DATA values should be read: 10 LET I = 60 20 RESTORE I 30 READ J:IF J=0 THEN END 40 PRINT J 50 GOTO 30 60 DATA 1,2,3,4,5,0 I expect this to output 1,2,3,4 and 5, each on a line, ... 40 IF D(C,0)=0 THEN END 50 PRINT D(C,0) 60 C=C+1: GOTO 40 (Development) ...

Trilotracker with an external SCC in DOS mode

by Mumbly on 30-12-2022, 17:29
Score: 172.14 %, Type: Forum topic , Comments: 9 comments
in page #8000-#BFFF than the page frame #4000-#7FFF call 0x138 ; get into A primary slot rrca rrca and 0x03 ; isolate slot for page #4000-#7FFF ld c,a ld b,0 ld hl,0xfcc1 ; get subslot flag (bit 7) for this primary slot add hl,bc or (hl) ; bit 0 ...

MSX-Music Hi-hat question

by Huey on 30-12-2022, 09:45
Score: 171.72 %, Type: Forum topic , Comments: 12 comments
AFAIK. I can confirm that registers I can confirm that registers 0x17, 0x18, 0x27 and 0 ...

Hardware accelerated polygon fill using LMMM

by Grauw on 29-12-2022, 02:10
Score: 171.81 %, Type: Forum topic , Comments: 8 comments
I give you this little demonstration: 100 COLOR 15,0,0:SCREEN 5 110 COLOR=(4,7,0,0):COLOR=(8,0,7,0):COLOR=(12,7,7,0) 120 P=0:SETPAGE P,1-P:CLS 130 FOR I=-31 TO 32 140 SETPAGE P,1-P 150 J=ABS(I)-16 160 LINE (64,74)-(191,137),0,BF 170 LINE (80+J,74)-(80-J,137),4,,XOR 180 LINE (159+J,74)-(159-J,137),4,,XOR 190 LINE ...

Parsing Command Structure?

by Chilly Willy on 28-12-2022, 22:23
Score: 171.66 %, Type: Forum topic , Comments: 11 comments
B, (HL) Compare A and B Then some routine after that to create a number between 0-255. Is ... C, A ; Put length in BC LD B, 0 INC DE ; Increment pointers ... Buffer DL = Table. Take first byte of table like Ld a, (de) ld c, a ld b, 0 So CPI ...

Scroll 1px problem, need your help

by Metalion on 26-12-2022, 21:14
Score: 171.68 %, Type: Forum topic , Comments: 8 comments
on the scroll direction. When going right, a new map is needed between +0 and +7. When going left, it's between +7 and +0. So I bluntly tested loading a new map at each step, but the problem is still there: ... on the scroll direction. When going right, a new map is needed between +0 and +7. When going left, it's ...
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