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Flappy Bird on MSX1
Score: 129.63 %,
Type: Forum topic , Comments: 95 comments
(playable):
http://www.msx.org/news/software/en/mega-challenge-09-leda
Only the environment stuff ...
For the Ti99 already exists! For the Ti99 already exists! http://youtu.be/0Uph0 ... https://www.youtube.com/watch?v=wuoCeze0B3c
now this one ?
Very nice!!!! Very nice!!!! Congratulations!
Wow! A scroll down ...
Extra WAIT signal on all instructions ?
Score: 125.7 %,
Type: Forum topic , Comments: 16 comments
Hi everyone,
Reading the Z80 documentation, I'm wondering if the extra WAIT signal is used on every instruction. There's a first WAIT signal poll from the CPU on fetching the instruction from memory, but that seems to be included in the M1 ...
RLD and RRD instructions
Score: 125.75 %,
Type: Forum topic , Comments: 4 comments
Output HEX(HL) -> SCREEN
xor a
rld
call .Nibble
.Nibble:
push af
daa
add a,F0h
adc a,40h
call ... to convert
Bin2Hex:
ld b,a
rrca
rrca
rrca
rrca
and 0Fh ; These instructions are the important ones
cp 10 ;
sbc a,69h ;
daa ;
ld (hl),a
inc hl
ld a,b
and 0Fh
cp 10
sbc a,69h
daa
ld ...
Respecting the 29 T-states timing
Score: 126.16 %,
Type: Forum topic , Comments: 31 comments
b,0
loop: outi
jp nz,loop
Do I respect the VDP timing requirement of 29 T-states ... everyone,
If I use this code on MSX1 to transfer 256 bytes to VRAM :
ld b,0
loop: outi ... (0x98),a), but I cannot see why...
1: outi
nop
nop
out (0x98),a
nop
nop
jr nz,1b
better ...
