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Calculating free memory...Hi Folks, I am using the following method to calculate the amount of free memory available to BASIC: [CODE]PRINT 65536-USR 7962[/CODE] Is this the…
... . He didn't checked Spectrum memory map to see that there ... lot of things after BASIC area. "Last" memory map system variable is ... ramtop = PEEK 23730+256*PEEK 23731
30 let basic = PEEK 23653+256*PEEK 23654 ... -
MicroSpeech Entry PointsHello Hardware Guys, Do any of you have any information regarding the MicroSpeech ROM. In particular: 1) Do you know what addressess cause it to p…
... captures the assignment of BASIC variables because it picks ... the uSource whcih monitors for BASIC variables "assemble", "debug", " ... Any info on the BASIC var assignment monitoring address?
memory reads. ie: PEEK (56) would also ... -
machine code loadercan someone have a look at this loader and break down what its actually doing and also how i can stop it from executing the 2 loads of headerless blo…
... get into Sinclair BASIC and wrote a program to PEEK everything above ... a few tips there... My memory is hazy, as I've ... -
Keys redefine routine and key check.I have written some asm code which allows me to redefine keys (for a game etc.), and also allows me to be able to check any keypresses for the redefi…
... use this routine from BASIC, I recommend changing ... RIGHT)
[*]the remaining keys directly returned as specific ... using the results from BASIC becomes very easy, kinda ... 120 LET X=X-1+PEEK updownaddress
130 ... LET Y=Y-1+PEEK leftrightaddress
140 ... -
Keys redefine routine and key check.I have written some asm code which allows me to redefine keys (for a game etc.), and also allows me to be able to check any keypresses for the redefi…
... Saukas;561626]Checking bits in BASIC is very inefficient. If anybody ... =NONE, 2=RIGHT)
[*]the remaining keys directly returned as specific ... /> 120 LET X=X-1+PEEK updownaddress
130 LET Y ... =Y-1+PEEK leftrightaddress
140 PRINT AT ... -
Address of monitor to load emulator files into real SpeccyI have a monitor/debugger that can load data over serial port really fast. Now I would like to extend it to load standard emulator files over the ser…
... '.
.SNA files are whole-memory dumps.
.TAP files are ... -read the first bit of BASIC in a TAP file for ... nnnnn commands, and interpret the remaining headers (if present) from the ... screen, and use the screen memory for your code and displaying ... -
hisoft basic compiler - saveAnd yet another question. I'm sure spamming forums a lot hehe :) Is there anyone expirienced with hisoft basic compiler? I'm working on small program…
... and check that adress from basic to what to do, like ... start)
20 let z=peek 30000 (game requests save if ... the memory.
For your info, MCODER III shares basic ... -
SP1 library questionsI'm working on my first game. I've not written a game since the late 1980s and that was a text based multiuser dungeon for BBC Micros with econet... …
... at a time) then memory constraints should be little worry ... pointers to the sprite graphics remaining in internal data structures. ... rotation tables at top of memory if set
* ... attribute detection as in many Basic programs. You can investigate ... -
Requesting a little help to identify the purpose of this 'add-on' to my Issue 2Hi everyone First of all it's my first post here so please go easy on me! I'm grateful to be accepted into your fine little club :smile: I probabl…
... POKE'd value the return PEEK'd value doesn't match ... . I would write a quick BASIC proggie to POKE some values ... POKE'd, and what is PEEK'd back. For all 256 ... just take 1 or 2 memory locations, POKE a few values ... -
Up/Down Left/Right scrollCan anybody give a newbie some pointer to simple one char scrolling by pixel? I've looked at a lot of resources, but as you can imagine, it's all a …
... you and is barely above basic :)
The first ... involves POKEing eight bytes to memory per letter, each byte representing ... in characters
; b = width remaining in current pixel row
; b' = pixel y rows remaining
ld a,(hl ... -
New SpecBAS available - v0.710Been a while, but I've just uploaded the latest build of SpecBAS. This one now supports tilemaps (with rotation and scaling) and added OVER mode (XO…
... ; what is the memory limitation with SpecBAS? ... a memory block seperate from the SpecBAS BASIC program? ... access it via POKE/PEEK? What I mean ... memory pool can then be examined or altered by POKE and PEEK ... /> and
PEEK name_MP_address
i.e ... -
New SpecBAS available - v0.710Been a while, but I've just uploaded the latest build of SpecBAS. This one now supports tilemaps (with rotation and scaling) and added OVER mode (XO…
[QUOTE=ewgf;579158]Thanks for this, Dunny, but is there an archive of programs I can try for it?[/quote]
I shall pop an archive of demo programs up for you. Here you go:
[url]https://sites.google.com/site/pauldunn/demos.zip[/url]< ... -
New SpecBAS available - v0.710Been a while, but I've just uploaded the latest build of SpecBAS. This one now supports tilemaps (with rotation and scaling) and added OVER mode (XO…
[QUOTE=Dunny;579193]I shall pop an archive of demo programs up for you. Here you go:
[url]https://sites.google.com/site/pauldunn/demos.zip[/url]
Unpack that into your Specbas folder.[/QUOTE]
Thanks mate. Although now ... -
Mazes and Tremaux's AlgorithmI've done a version of Tremaux's maze solving algorithm which solves my current test maze with 400 junctions and 715 connections in a reasonably quic…
... found" segment.
The remaining phases are:
* Trace the ... . I did it all in BASIC first to get the logic ... ,:
POKE a+bo+k2,PEEK (a+bo+k2)+k1:
What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…
... common knowledge that the extra memory was inaccessible; it was only ... chip was the ROM. The remaining chips were unconnected.
remaining 16K are being used or ... when doing POKE's and PEEK's to ROM space to ...stuck on recursive functionI want this function to PEEK 'l' bytes from memory starting at 's' and return them as a string, but however much I fiddle about with quoting and pare…
... why I get "Nonsense in BASIC" more often than not until ... :
* CHR$ PEEK (s) returns the addressed byte from memory;
* ("FN ... ) the first iteration gives CHR$ PEEK ( 56168 ) and then VAL$ ... still fail with "Out of memory", as each iteration creates a ...128k gone badHi All, Turned my 128k on this morning and... [img]http://www.w.angold.btinternet.co.uk/bad128small.jpg[/img] Can anyone help? whats the most lik…
Almost certainly bad RAM (one or more bad RAM ICs)
If you have a DivIDE or any other piece of hardware that makes a 128K come up in USR 0 mode, if the failure is in upper memory it's very easy to find using BASIC POKE and PEEK.space available in bytes - questionHi, question: - if i create a *.txt file in pee cee: if empty it will show 0 bytes if i put text "abcde" it will show 5 bytes if i put texte (in 2 l…
... area marked "spare" in the memory map on page 121 of ... no BASIC program in memory, but P_RAMT-RAMTOP; ie. (PEEK 23732+256*PEEK 23733)-(PEEK ... 23730+256*PEEK ... 5 are occupied with a BASIC program.Issue 2 headache!Ive got an issue 2 here that firstly had a blown regulator (fixed), now its reading as a 16k machine (its fully populated), ive replaced and socketed…
... short BASIC program may show it:
10 LET a=PEEK ... test
20 LET b=PEEK address
30 PRINT AT ... it looks like the upper memory locations were stuck with fixed ...Diagnosing a strange software fault in a 48kHi, A friend gave me a 48k, which I am very keen to restore. The spectrum 48k was my first computer over 20 years ago and I owe my ability to code t…
... POKE 50000,170
PRINT PEEK 50000
You ... because it's in memory that's not used ... check what's affecting the memory - the easiest way to ... using a Multiface with the memory window - change some numbers ... can do it from BASIC if necessary though.Query about memorySo I know this has been asked a lot and I beg your brief indulgence. I have scanned through a lot of old threads already but I'm trying to improve m…
PRINT PEEK 23733 reads one of the ... />
See Chapter 24 The memory and Chapter 25 The system ... Sinclair ZX Spectrum BASIC programming manual.
PRINT PEEK 23733
Asking for help: ZXBC to ASM routine translationHallo, In order to save some bytes and gain speed, I'm asking for translation of a very simple ZXBC routine to Assembler [code] sub light(x as uinteg…
... /> It takes a bit more memory than the same sub fastcalled ... to 439
c=c+(peek(@Level+b)=4)
next ... Memory to return it. Your tutorial helped me to save this BASIC ...First new game of 2013: Apulija-13[center]Corporal Jonlan is on a dangerous mission. Under a false identity, he must gain access to an Omni Corporation base, steal the plans for some…
... ,25 diskette and from SD Memory Card. But here is inexplicable ... used an IF PEEK 23296 = 245 condition in the BASIC management program ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... last byte in the memory and easy to remember, ... decrunchers without changes in the BASIC code.
And from BASIC you must use the next ... POKE 65525,x-256*PEEK 65526
1010 POKE ... POKE 65528,y-256*PEEK 65529
1020 RANDOMIZE ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... :???: If I, say, enter this BASIC program, where line 25 loads ... not relocated to a higher memory address?
5 CLEAR ... /256): POKE 65525,x-256*PEEK 65526
1010 POKE 65529 ... /256): POKE 65528,y-256*PEEK 65529
1020 RANDOMIZE USR ...Newbie Spectrum developer advice ....Hi, Im new to the site and to spectrum developing - well, not quite, I wrote Spectrum programmes in Basic 30 years ago but then went off into the wo…
... use of the extra memory from BASIC is not so straightforward ... reference the RAM directly via PEEK & POKE or indirectly ... with the extra memory from BASIC, apart from saving extra BASIC, CODE & ... something is loaded into main memory it overwrites what was ...Switch 128k to 48k modeNot sure how to go about this using MC, in 128 basic you can type SPECTRUM to revert to 48 mode (I think), but how would I go about switching modes u…
Hmmm... Short on memory, think it might be easier ... the SPECTRUM command in the basic loader.
What is ... like this:
IF PEEK ?????=?? THEN SPECTRUMNew presentation for ZX Spectrum: "New Wave"DOWNLOAD: [url]http://pouet.net/prod.php?which=61133[/url] [img]http://pouet.net/screenshots/61133.png[/img] Enjoy.
... some changes in the BASIC loader of TRD version, ... RANDOMIZE USR VAL "15363+256*(PEEK 15363195)": REM : LOAD a$ ... following line in the BASIC editor before saving the ... 190+"23635+256*"+CHR$ 190+"PEEK 23636+5"
[/CODE ... me to use some memory saving techniques.Flashing coloured blocks - diagnosisHiya, hope this is the right place for this... Was given an Issue 2 48K by a someone yesterday that hasn't been powered on in 20 years, which works …
... (as happens with the POKE/PEEK test to a single location ... found that the rate of memory access can trigger errors. For ... that cannot be discovered via BASIC, but they are revealed straight ...Font hack that was used in a lot of early gamesThere was a little hack for changing the fonts on a spectrum and I remember it being used in a couple of old games on the 48k, it was a sort of ye od…
... , will fail with "Nonsense in BASIC". For why, I'll explain ...
9999 LET prog=PEEK 23635+256*PEEK 23636:
LET hilen ... will fail with "Out of memory". However, before executing any line ... and gives a "Nonsense in BASIC" error. Attempting to auto-run ...
