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Messages - ben_g
Pages: 1 ... 66 67 [68] 69 70 71
1006
« on: May 29, 2011, 04:10:16 pm »
I got it to install and run, but when i try to connect, my calc just doesn't show up in the list of connected calcs
1007
« on: May 29, 2011, 03:59:50 pm »
1594: You think abouth how to optimise your code when standing in a shower
1595: You totally forgot a calc is made for math
1596: When you learn something new at math, you just have to write a basic program that can solve it
1597: When you replied to a thread, you sometimes keep refreshing the page to see if someone has replied
1008
« on: May 27, 2011, 07:23:12 pm »
Managed to get TiLP working (what a battle that was), so problem solved I guess (or more like avoided). Thank you all for the advice!
How? I can't even get TI-LP to connect
1009
« on: May 27, 2011, 03:40:59 pm »
what is 'The Game'?
1010
« on: May 26, 2011, 04:14:43 pm »
Is there any rom call to write a signed number to the screen?
1011
« on: May 26, 2011, 04:00:40 pm »
an other attempt on my divide, Will this handle signed numbers correctely?
DivFP:
;IN: hl, de
;OUT: hl = hl / de
bit 7, d ;start of signed stuff
jr nz, _DivFP_FirstNeg
bit 7, h
jr nz, _DivFP_AnsNeg
jr z, _DivFP_AnsPos
_DivFP_FirstNeg:
bit 7, h
jr nz, _DivFP_AnsPos
_DivFP_AnsNeg:
ld a, 1
push af
jr _DivFP_Cont
_DivFP_AnsPos:
ld a, 0
push af
_DivFP_Cont:
bit 7, h
jr z, _DivFP_HLPos
call NegHL
_DivFP_HLPos:
bit 7, d
jr z, _DivFP_DEPos
call NegDE
_DivFP_DEPos ;end of signed stuff and start of the unsigned divide
ld a, h
ld h, l
ld l, 0
call Div24by16
pop af
cp 1
call z, NegHL
ret
Div24by16:
push hl ;INPUTS: ahl = dividend de = divisor ;1
pop ix ;OUTPUTS: ahl = quotient de = divisor ;0
ld hl,0
ld b,24
_Div24by16loop:
add ix,ix
rla
adc hl,hl
jr c,_Div24by16setbit
or a
sbc hl,de
add hl,de
jr c,_Div24by16skip
_Div24by16setbit:
or a
sbc hl,de
inc ix
_Div24by16skip:
djnz _Div24by16loop
push ix ;1
pop hl ;0
ret
NegHL:
xor a
sub l
ld l,a
sbc a,a
sub h
ld h,a
ret
NegBC:
xor a
sub c
ld c,a
sbc a,a
sub b
ld b,a
ret
NegDE:
xor a
sub e
ld e,a
sbc a,a
sub d
ld d,a
ret
I hope I've finally got it right
1012
« on: May 26, 2011, 03:47:34 pm »
will NegHL also make negative numbers positive?
1013
« on: May 26, 2011, 02:44:11 pm »
then how do the negative number actually works? I thought the 7th bit on 8 bit numbers was the sign bit, and the 15th one with 16bit numbers, but from what you told me, I think what i thought of negative numbers was totally wrong.
1014
« on: May 25, 2011, 03:19:41 pm »
OK, I swapped it
Will this work as a signed fixed-point divide?
MulFP:
;Multiplies 2 16bit fixed-point numbers
;IN: de, bc
;OUT: de * bc in hl
;DESTROYS:
bit 7, d
jr nz, _MulFP_FirstNeg
bit 7, b
jr nz, _MulFP_AnsNeg
jr z, _MulFP_AnsPos
_MulFP_FirstNeg:
bit 7, b
jr nz, _MulFP_AnsPos
_MulFP_AnsNeg:
ld a, 1
push af
jr _MulFP_Cont
_MulFP_AnsPos:
ld a, 0
push af
_MulFP_Cont
res 7, b
res 7, d
call Mul16
ld l, h
ld h, e
pop af
cp 1
call z, NegHL
ret
Mul16: ; DEHL=BC*DE
ld hl,0
ld a,16
Mul16Loop:
add hl,hl
rl e
rl d
jp nc,NoMul16
add hl,bc
jp nc,NoMul16
inc de ; This instruction (with the jump) is like an "ADC DE,0"
NoMul16:
dec a
jp nz,Mul16Loop
ret
NegHL:
xor a
sub l
ld l,a
sbc a,a
sub h
ld h,a
ret
1015
« on: May 25, 2011, 01:48:00 pm »
I already posted that I've got a ti-84 plus and a TI-30XIIB, but I now also got a picture
The ti-84 plus is running a very cool game on the picture. also, sorry for the low resolution - I used my scanner
1016
« on: May 23, 2011, 03:54:39 pm »
so, will this work as a signed fixed-point division?DivFP:
;IN: hl, de
;OUT: hl = hl / de
bit 7, h
jr nz, _DivFP_FirstNeg
bit 7, d
jr nz, _DivFP_AnsNeg
jr z, _DivFP_AnsPos
_DivFP_FirstNeg:
bit 7, h
jr nz, _DivFP_AnsPos
_DivFP_AnsNeg:
ld a, 1
push af
jr DivFP_Cont
_DivFP_AnsPos:
ld a, 0
push af
_DivFP_Cont
res 7, h
res 7, d
ld a, h
ld h, l
ld l, 0
call Div24by16
pop af
cp 1
call z, NegHL
ret
Div24by16:
push hl ;INPUTS: ahl = dividend de = divisor ;1
pop ix ;OUTPUTS: ahl = quotient de = divisor ;0
ld hl,0
ld b,24
_Div24by16loop:
add ix,ix
rla
adc hl,hl
jr c,_Div24by16setbit
or a
sbc hl,de
add hl,de
jr c,_Div24by16skip
_Div24by16setbit:
or a
sbc hl,de
inc ix
_Div24by16skip:
djnz _Div24by16loop
push ix ;1
pop hl ;0
ret
NegHL:
xor a
sub l
ld l,a
sbc a,a
sub h
ld h,a
1017
« on: May 22, 2011, 02:50:34 pm »
The first one is the funniest thing ever seen 
1018
« on: May 22, 2011, 02:43:26 pm »
i checked the readmy, and it said certain versions aren't supported. I checked the serial number, and mine was one of them 
1019
« on: May 22, 2011, 02:38:39 pm »
I only have a ti-84plus(new version, so it can't run tiboy ) and a ti-30xIIB
1020
« on: May 22, 2011, 01:48:13 pm »
Just let him think of his own eastereggs. They should be FOUND, not sugested
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