... by what can fit into memory. This is the controlling routine ... It's too slow in BASIC, but it gives an example ... ]dif+[/b][/color](PEEK (34304+j-k1)PEEK (34560+j-k1 ... 18 PRINT off;AT 24-PEEK 23689,k0;:
IF NOT ... 5260
30 LET ch1=PEEK (j+i-k1): LET ...

... gets, both speed wise and memory wise. All you need is ... destination.


[*] All remaining positions that are neighbor to ... .


[*] All remaining positions that are neighbor to ... ]

Not in BASIC perhaps, but it is fast ...

...
between several fonts in memory for instance), you can directly ...
65061 by default). From BASIC, it can be done as ... /256): POKE 65060,FONT-256*PEEK 65061[/CODE]

In ...

... (modulo arithmetic) in ZX Basic is there (and you can ... Easiest thing to do in basic is probably just use a ... it overflows. Or do memory contents wrap when you poke ... you could do POKE(address, PEEK(address) + 1) to wrap ... as slow as ZX Basic you'd better pick ...

... 't the UDGs in high memory though? Are they above the ... POKE and PEEK it is all super easy. If only Basic had ...

... (just like Sinclair BASIC functions such as [B]PEEK[/B] and [B ... return anything (just like Sinclair BASIC commands like [B]PRINT[/B ... sub[/CODE]

The remaining functions will take more time ...

... RAM chip without using the peek/poke routines? (with a ... />
But I think the memory is interleaved, so I'm ... in half to the lower memory bank and see if ... then, you can now PEEK+POKE to make sure they ... test on each of the remaining 8 until you know which ...

... /10/02/zx-spectrum-screen-memory/"]http://flockofspectrums.wordpress.com/2010 ... shifting and OR operations in BASIC... which was fun. I'm ... /10/02/zx-spectrum-screen-memory/
1107 REM Implements ... index
1190 LET byte=peek(adr): REM get current byte ...

... Every line is stored in memory sequentially, and don't ... [code] 10 LET dc=PEEK 23635+256*PEEK 23636
20 LET ... df=PEEK 23627+256*PEEK 23628
30 ... LET nl=PEEK dc*256+PEEK (dc+1)
... /> 50 LET ll=PEEK dc+256*PEEK (dc+1)
...

... find the code in the memory.
My program was:
BASIC i checked the code with:
[CODE]LET A=PEEK 30000 ...

... find the code in the memory.
My program was:
BASIC i checked the code with:
[CODE]LET A=PEEK 30000 ...

... entered
with the memory configured as illustrated below ... at the bottom of memory in the address ... BASIC ROM). The RAM page at the top of
memory ... /> the top of memory, the stack held somewhere ... the bottom of
memory (000h...3FFFh). This ...

... variable on top of any memory location. Below I will ... another simultaneously executing thread (the basic ISR in this case). ... Interestingly, basic programs usually do something like "PEEK 23672+256*PEEK 23673" ... to stop using the basic ISR and replace it ...

... lines of assembler from a BASIC program into an array. ... any contiguous area of memory as though it was ... .... RESTORE mmmm: LET da=PEEK 23639+256*PEEK 23640+9:
[*]Initialise ... .... RANDOMIZE da: POKE 23563,PEEK 23670: POKE 23564,PEEK 23671
[*]Assign ...

... -23607) to any address in memory and use 96 font characters ... so very fast. Boriels ZX Basic Compiler is better for game ... /256): POKE 23606,p-256*PEEK 23607
110 PRINT a ...

... /> 30 PRINT a;TAB 8;PEEK 23747
40 GO TO ... /> I could go "start in BASIC" route but having to write ... a string of BASIC before doing the appropriate RAND ... to a block of memory then do a memory snapshot save. It ...

... that none of the preceding BASIC has been altered since the ... the function is still in memory, then RESTORE 10: RANDOMIZE USR ... , RESTORE 10: RANDOMIZE USR (PEEK 23639+256*PEEK 23640+6) will run ...

... work; other actions which allocate memory (apart from DIM) require 80 ... than 1000 bytes for a BASIC program. (VARS)-(PROG) gives the ... the BASIC:

DEF FN p(a)=PEEK a+256*PEEK (a ...

... intos that have the same basic accuracy. I actually meant for ... post on WoS on few remaining inaccuracies in the Pentagon emulation ... had time to get the basic facts together.

... clones are reading the screen memory earlier (essentially, due to ...

... want to take a quick peek, but 25 years ago I ... me to load a BASIC loader into memory, "clean" it and then ... line 0, no Out of Memory messages, etc.

... want to take a quick peek, but 25 years ago I ... me to load a BASIC loader into memory, "clean" it and then ... line 0, no Out of Memory messages, etc.[/QUOTE]

PEEK A: NEXT A

If you use Boriels ZX BASIC Compiler:
[CODE]
... 0 to 4
print peek(@datalabel+a)
next ... screen
In Sinclair BASIC your code can be this ... br /> 30 let a(f)=peek (54999+f)
40 ... 9,10 is stored in memory from address 55000 to 55010 ...

... ]If you use Boriels ZX BASIC Compiler:
[CODE]
... 0 to 4
print peek(@datalabel+a)
next ... screen
In Sinclair BASIC your code can be this ... br /> 30 let a(f)=peek (54999+f)
40 ... 9,10 is stored in memory from address 55000 to 55010 ...

... am struggling with in basic...Cheers again...;-)...[/QUOTE]
memory.
if you ... can try this to copy memory:
[CODE]
in Sinclair BASIC use this:
[CODE ... br /> Poke 56000+a,peek (55000+a)
...

... a fastcalled instruction to copy memory.
if you want to ... can try this to copy memory:
[CODE]
DI
[/CODE]
in Sinclair BASIC use this:
[CODE]
Poke 56000+a,peek (55000+a)
Next a ...

... speccy BASIC has a large emphasis of addressing the memory directly with Peek ... probably stick to the simpler BASIC style games for the mean ...

... ]Compile each block to different memory area. Call other blocks with ... , pass variables/info by POKE/PEEK, return from called program by ... in low in memory after compiling and NEWing the BASIC area, you ...

Hmm - my BASIC uses everything in data statements. ... could POKE it as a memory block then delete those statements ... rewrite the loops to use PEEK instead.

Mcoder III ...

[QUOTE=Nonsense in BASIC;789386]I seem to remember ... from a 25 year old memory. Haven't had time to ... clearly a few paint-pixels remaining on the lower right hand ...