... initially running the chunk of code shown below, which is ... of memory to alter the code which follows on from ... short while calls BC_SPACES with zero in BC, attempting to ... nor did EightyOne.)

[code]
JR $8015 ; 8000 18 ...

... by entering SAVE d1"rom" CODE 0,16384. Then,
start ... ), then type LOAD d1"rom" CODE 32768 to load the
non-zero. You can check that this ...

... . Just a few lines of code, in fact.[/QUOTE]

zero, trigger detection... This would assume ... would love to see example code (especially if it really is ...

... Just a few lines of code, in fact.[/QUOTE]
... and those that aren't zero, trigger detection... This would ... would love to see example code (especially if it really ... ...just too deep in code to mock up the ... "just a few lines of code", too.

...

... , and those that aren't zero, trigger detection... This would assume ... would love to see example code (especially if it really is ...

... print message routine:
[code]
call pm_do_it ; ...
ret
[/code]

In get_defined_key ... [code]ld a,0[/code]
with
[code]xor a[/code]< ... bc loop has hit zero, the ld a, ... register whilst doing the bc zero test.

...

...
[code]ld a,0[/code]
with
[code]xor a[/code]
zero, the ld a, 0 ... register whilst doing the bc zero test.
[/QUOTE]
Aye ... br />
[QUOTE=Metalbrain;562943][code]
get_defined_key: ld de,port_array ...

... laziness...just too deep in code to mock up the following ... "just a few lines of code", too.

With 32x32 ...

... the byte on screen is zero or not:

4) If result is zero, then the space is empty ...
4) If result is zero, jump to step 5, ELSE ... ... (but might involve more code than a mere checking of ... not your screen byte is zero)

PS: OPPS!... ...

... br /> and the disassembled code:

[CODE]
5b00 dd2a0b5c LD ... ; not found, BC is zero.
5b42 c5 PUSH ... /> 5b74 c9 RET
[/CODE]

Here is ... DEF FN n(n$)=CODE n$-CODE "0"-(7 AND n ...

... from position c onwards, returning zero if not found or if ... an error if b is zero (or, in general, less than ... to be, then.

[code]
4 DEF FN i ...

... doesn't bother with zero padding.

[code]
DEF FN ... ,f,10),10,t)
[/code]

Come to think ...

... into numbers they're 'Machine Code'. But if someone says they ... 're programming in 'Machine Code', they're probably not; they ... system flags (e.g. carry, zero) are affected and a short ... "LD A,5" then the code is 3E 05 (in hex ...

... into numbers they're 'Machine Code'. But if someone says they ... 're programming in 'Machine Code', they're probably not; they ... system flags (e.g. carry, zero) are affected and a short ... "LD A,5" then the code is 3E 05 (in hex ...

... /> 16 ? Barcode
17 ? Product code
[/COLOR][/B] FF - Comment ... .66 - [B]Ok[/B]
Zero 0.4.6 - [B]Ok ...

... to get it out (writing code to handle specifically the TZX ... pretty much anything with almost zero effort. Users don't even ...

... parity flag:

[code]
[...]
ld bc,192 ... ldi

ldi ; Inline code here for speed
ldi ... then return
[...]
[/code][/QUOTE]

Thanks for ... when BC gets down to zero, which for some reason ...

... used for plotting/engraving.
[CODE];Simple and fast plot/draw ... /> OR B ;test for 2 zero distances
RET Z ;exit ... HL ;coords
RET[/FONT][/CODE]

... zero.

I've spent [I]ages[/I] hacking the code ...

... zero.

I've spent [I]ages[/I] hacking the code ... idea :P A image to code converter to make games with ...

... and sets the zero flag when it reaches zero again (avoiding the ... equivalent version of your program:[code] ld hl,&4000
djnz loop
ret[/code]
It shares the low ...

... of yours. Starting from your code you could do this...
zero check
[*]With A ... needed to check DE for zero, we can keep the ... (currently E). For the zero flag to be set at ... ahead as you write the code, so it isn't ...

... a chance to try your code above but if you are ... 8-bit INC sets the zero flag when you INC from ...

... loop when BC isn't zero, compared to 23T for LD ... the mix (not excessively unrolled):[code] di
ld (stack+1 ... ,0
ei
ret[/code]

... and sets the zero flag when it reaches zero again (avoiding the ... I understand here as your code does not contain a DEC ... do the following:

[CODE]LD C,0
...
INC C
JRNZ LOOP[/CODE]

i.e. you ...

... instructions easily explaned:

[CODE]ADC HL,ss Add with ... to PC+e if non zero (Z=0).
JR Z ... relative to PC+e if zero (Z=1).
LD A ... OR operand s and accumulator.[/CODE]

... initialize call:

[code]
void sp1_Initialize(uchar iflag ... flag is not included only zero pointers will be overwritten ... is drawn on screen.
[/code]


[ ... eliminate all the sub-optimal code the compiler generates at ...

... was too big and resets Zero if it was negative, ... if necessary.

[code]
SCANNG: equ $24fb ;the ...
sla a ;}character code
sla a ;}to
ret
[/code]

... /zx82.htm#L2831[/url]
[code]; ---

; Success!
; ... A ; test A ( will be zero if string '$' - '$' )

... current parameter holding space:
[code] POP HL ; pop the start ...

... L24FB ; CHANGE!! to 386Eh[/B][/code]

The routine at ... still there)

ret[/code]

The routine only ... /> [code];; SF-VALUES
L2831: AND A ; test A ( will be zero ...