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Thought this would be simple... Z80Hi Folks, Started to read "Beyond simple BASIC, Delving Deeper into your ZX Spectrum" by Dilwyn Jones. This is a great book and I came across the…
... of basic
[code]
1 POKE 23674,255:POKE 23673,255:POKE 23672 ... /> 3 PRINT (65536*PEEK 23674+PEEK 23672+255*PEEK 23673)/50
[/code ... ; 170
LD B,128 ; do 128 times
L170 LD (HL ... -
Spectrum +2 grey ear mod?Is it possible to turn the sound port on the back of a grey Spectrum +2 into an ear input? I know it's possible for the black +2 but I can't find muc…
... of memory bank required) to switch between them in 48 BASIC ... , is ensuring that the BASIC system thinks that the top ... .
Of course, BASIC has limited commands and functions ... slow.
But PEEK And POKE can access any memory within the current ... -
Help with a TIMEX TC2048 and memory problemBought a 2nd hand Timex TC2048 but unfortunately I detected a problem with the machine which is preventing it from working properly. I believe it …
... memory test program?
Also if not, have you tried using BASIC ... to POKE values at addresses greater than ... POKE a,d
50 PRINT "address ";a;" wrote ";d;" read ";PEEK ... -
BREAK key on 128k SpectrumWhat happens when BREAK is pressed on a 128k Spectrum? Why is it different from what happens on a 48k Spectrum. Is there a way to disable it or to …
... s an example of a BASIC error handler which is called ... FN p(a)=VAL "PEEK a+256*PEEK (a+1)":
...
9005 LET err=PEEK 23681+1: LET erl=FN ... LET erc=PEEK e: LET e$=e$+CHR$ (erc-(128 AND erc ... >=128)):
IF erc -
How to stop a flickering character erasure?I'm trying to figure out how to build a moving sprite. Eventually it will be made up of several UDG's. However its early days yet so I'm experimentin…
... general encouragement to persist with BASIC (even though I know you ... (processor 4x faster) directly from BASIC.
https://cthutu.itch ... =0 TO 185: BANK 18 POKE i,6: NEXT i
Saving and restoring data in 128kHi all I'm trying to program a game using compiled ZX Basic for the +2A/+2B/+3. Thanks to a lot of info I found on the forums, I manage to access …
... exactly what I'm doing (POKE -> OUT -> ... of the memory. The is one single BASIC command that ... can control the data there: POKE.< ... you can use are: POKE and PEEK. As you can ...
Since using PEEK and POKE is very easy, I'll ...New Utility to Transfer Z80 Snapshot to +3 DiskSince getting a Gotek for my +3 it has been my go to machine. The biggest downside however is the lack of older games on disk format with pretty much…
... with just the data (no basic) @ 16384
this ... be loaded via
basic which loads the code @ ... load it and then poke the file number in ... br />
A simple basic loader code would be as ... "loader" CODE
40 POKE 32766,a+48
50 ...48K Issue 2 RAM issuesI have 48K issue 2 board (I've checked, the upper memory is present!). It's not very well. I've not attempted to diagnose one before, so please bear …
... /> POKE 32769,85 : PRINT PEEK 32769
POKE 32769,170 : PRINT PEEK 32769
POKE ... of the memory locations used by the system/BASIC which is ... then overwritten by the system/BASIC).
The upper ... on, is NOT a full memory test. It is rather, ...48K Issue 2 RAM issuesI have 48K issue 2 board (I've checked, the upper memory is present!). It's not very well. I've not attempted to diagnose one before, so please bear …
...
20 POKE 32768,0
30 LET d=PEEK 32768
memory locations that do not return ... that address for any later memory location that is different.
BASIC program.
[b][i ...Maze Death Race - did it ever work?As a huge Rally-X fan I was always disappointed in MDR, but I cannot remember if that was just because it was a poor clone or if it was also because …
... /> 4502 IF PEEK b54 AND PEEK b36 THEN POKE b,54
memory, just simple draw the ... cleared from the screen memory. It is absolutely useless ... .
Just POKE from 32891 the new maze ... can do it in the BASIC part! Just see the ...What to write / programme?I've been trying to get back some motivation to write something in machine code for the Spectrum. I don't feel I am organised enough to write somethi…
... best to begin with learning PEEK, POKE and what BINARY is, ... LET in BASIC, or alternatively a bit like POKE and PEEK, depending on ... think of as internal processor memory stores which are separate ... from the program memory where your machine code ...What to write / programme?I've been trying to get back some motivation to write something in machine code for the Spectrum. I don't feel I am organised enough to write somethi…
... /> Begin by exploring instructions like PEEK and POKE, and BIN,
20 PRINT PEEK 50000
Then look at memory maps of ... , and what is reserved for BASIC, the System Variables etc. Gradually ...A couple of random questions......because, why not? (1) USR0 mode on the +3/+2A/B I know of its existence, I know how it's used, and I have some games that require it to work o…
... or typing LOAD "" in 128 BASIC?[/quote]
All USR0 does ... which it does by paging in and out a ... issue a POKE 23611,204 in +3 BASIC and it ... introduced by the 128K BASIC interpreter and carried over ... it directly in your BASIC listing—the interpreter will ...Dynamite Dan II - Island 6 - HELP!Hi all, can someone possibly create a snapshot of Island 6 (car park island) on Dynamite Dan II for me please? I'm trying to work out why half the…
... area is used for 128 features like switching memory banks etc. So ... after doing USR 0 in 128 basic (this will keep AY and ... to 48 Basic (no AY). Or from 128 program, disable the 128 paging and ... write 256 zeroes to 23296 to clear the memory ...How to apart a 16K from a 48K?How can I understand that if i have a 16K or 48K? Thanks
For DRAM chips that use 128 cycle (7 bit) refresh, ... br />
The ZX Spectrum BASIC ROM sets a system variable ... /> Use:
[code]PRINT PEEK 23732 + PEEK 23733 * 256[/code]
to ... you would expect. But the memory check routine does not specifically ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... would be best learning enough basic first to get the character ... or you can POKE values to a memory location and PEEK them instead ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... would be best learning enough basic first to get the character ... or you can POKE values to a memory location and PEEK them instead ...How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…
... /4a and when using extended basic with its so simple sprite ... all this about registers and memory addresses,and i still dont ... good with speccy basic as well all this peek and attr to ...Anyone Recognizes This Loader?Hi there! I live in Argentina. I have a -dead by now- CZ Spectrum (a ZX clone made by an argentinian company, Czerweny, which used to make... Excell…
... headers):
A single BASIC loader (no assembly), which LOADs ... The last sentence in the BASIC loader was invariably RANDOMIZE USR ... br />
I used to POKE a game before the RANDOMIZE ... not only completely "decoded" in memory, it also means that it ...spectrum mode smiilar to c64?i dont know much about machine code assembler routines, zilch actually to be honest, ive always fiddled with basic on my spectrum, only doing maybe a…
... honest, ive always fiddled with basic on my spectrum, only doing ... a mail, or if Peek n Poke will put them on his ...Basic listings memory occupationI remember readong someplace that due to basic's representation of number, in a program, in order to save space, it was better to represent integers …
... readong someplace that due to basic's representation of number, in ...a poke to change fonts??hi ppl, there wasnt some poke in basic to change the look alike of the fonts of speccy?? I guess I did things like that in eighties.. also, there…
hi ppl, there wasnt some poke in basic to change the look alike ... , there were a poke to quit "scroll? " message in basic??
Memory usageBrowsing the online documentation for the Spectrum I came across a peculiar discrepency. As we all know the start of the RAM is at 16384 which is whe…
... where the screen memory resides. The screen memory ends at ... that they refered to paging.
Of course ... what on earth the memory before KSTATE and after ... the video memory is used for on ... more variables were planned for paging - and other things ...
