2012-04-18, 01:50 PM
nice, i got 11 secs for zxbasic and 7 secs for your function
I cant seem to get any colour of dots except black
On the second pass only the green paper shows up
I cant seem to get any colour of dots except black
Code:
SUB plotPoint (x as uByte, y as uByte)
ASM
ld d,(IX+5) ;'X
ld e,(IX+7) ;'Y
ld a, 191
sub e
ret c
ld e, a
and a
rra
scf
rra
and a
rra
xor e
and 248
xor e
ld h, a
ld a, d
rlca
rlca
rlca
xor e
and 199
xor e
rlca
rlca
ld l, a
ld a, d
and 7
ld b, a
inc b
ld a, 1
plotPoint_loop:
rrca
djnz plotPoint_loop
;cpl
ld b, a
ld a, (hl)
or b
ld (hl), a
END ASM
END SUB
FUNCTION t() as uLong
asm
DI
LD DE,(23674)
LD D,0
LD HL,(23672)
EI
end asm
end function
dim time0, time1, time2 as long
dim n as uInteger
cls
for n=1 to 150
plotPoint(n,n-1)
plot n,n+3
next n
time0=t()
Paper 5
INK 2
for n=0 to 191
for y=0 to 191
plotPoint(n,y)
next y
next n
time1=t()
Paper 3
INK 4
for n=0 to 191
for y=0 to 191
plot y,n
next y
next n
time2=t()
print "plotpoint 50,000 plot:"
print time1-time0;"frames =";(time1-time0)/cast(float,50);" seconds"
print
print "zxbasic 50,000 times:"
print time2-time1;"frames=";(time2-time1)/cast(float,50);" seconds"On the second pass only the green paper shows up