Search results
poll:outrun for msx2
Score: 149.47 %,
Type: Forum topic , Comments: 122 comments
lines of the road, allowing turns and hills. What I would do is:
Start at (x,y)=(0, 191) ... and 2K colour table directly, with the name table filled with 0..255. However updating 4K is still too ... pattern and colour table parts by changing bits 0-1 of r#4 and bits 5-6 of r#3.
A little memory saving ...
To Grauw: Sprite colors linked to sprite pattern no.
Score: 145.62 %,
Type: Forum topic , Comments: 7 comments
A common critic about msx2 vdp sprites is that sprite colors are linked to sprite plane no instead of sprite pattern no.
Before VRAM access timing was reengineered i always thought that is was not possible because of the need to calculate the SCT ...
What if V9938 never existed?
Score: 145.55 %,
Type: Forum topic , Comments: 58 comments
been
- 32KB of VRAM
- a Screen 0 mode with decent color support (8x8x2 colors)
- a Simple gfx ...
https://en.wikipedia.org/wiki/MSX#Evolution
"Evolution
MSX spawned four generations: MSX ( 1983 ), MSX2 ( 1985 ),[14] MSX2+ ( ...
https://translate.google.it/translate?hl=&sl=it&tl=en&u=http...
In this doc it is already pointed up how was the amiga sprite system weak when compared ...
VDP 8 bit VRAM ADDRESSING emulation issue
Score: 147.37 %,
Type: Forum topic , Comments: 12 comments
LO(ARG),HI(ARG)>>8
THE BASIC CODE CALLS 255 times the routine. Result:
A stripe of 0x41 bytes written on the second 16K VRAM Bank of VDP at addresses beginning From 1. Please note: 1 not 0! as specified. That ...
LD A,(0xF663)
CP 2
JP NZ,0x406F
LD HL,(0xF7F8)
LD A,L
DI
OUT (0x99),A
LD A,H
NOP
NOP
NOP
OUT (0 ...
R800 DMA...
Score: 145.32 %,
Type: Forum topic , Comments: 43 comments
instead of:
ld a, l
out (0x99),a
ld a, h
or 0x40
out (0x99),a
became
ld c, ... will need to change VDP R15 in order to read either status register S0 and S1. So _ANY_ non-interrupt code ... is extremely slower, in the best case you need 2us to perform a memory access (page 0). OK, the out on z80 ...
