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zx81 loading and saving codei cant get registered with the zx81 forum, so i thought id try here. how is this done? ive tried loading and saving using code xxxxx,xxxx but nothing…
... the size of the ZX Spectrum 16K/48K/+ BASIC ROM. ... and functions that the ZX Spectrum has.
So the ... also some of the system variables, and the current variables.
There is ... to save machine code, data, variables, or the screen as separate ... -
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…
... memory maps of the ZX Spectrum to see what areas you ... is reserved for BASIC, the System Variables etc. Gradually you will start ... -
How to write a simple BASIC* horizontal scrolling game (Tutorial) [b]How to write a simple BASIC* horizontal scrolling game[/b] In this tutorial, we will be talking about how to write a simple BASIC* horizont…
... file the same as the Spectrum... and of course it doesn ... address of one of the system variables on a ZX81 - it starts ... specified by another of the system variables, D_FILE. Now, it's all ... -
Fighting Warrior's protection systemThis is one of those bizarre cases where cracking the loading system is orders of magnitude more fun than playing the game. (Indeed, discovering I wa…
... cases where cracking the loading system is orders of magnitude more ... to get into. The loading system, however, is a real ... the BASIC overwrites all the system variables, sets up ERR_SP to point ... with just the stock 48K Spectrum, it was flipping complicated.
Strongest aspect of Spectrum BASICWhat would you say is the strongest aspect of Spectrum BASIC compared to other BASICs on other micros at the time. I think it might have been the Fun…
... book version. But on a Spectrum Emulator, so I left the ... to POKE somewhere into the Spectrum's screen memory. Not sure ... on the ZX81, possibly the System Variables, but I am not sure ... radians."
Maybe the Spectrum differs there and that is ...Strongest aspect of Spectrum BASICWhat would you say is the strongest aspect of Spectrum BASIC compared to other BASICs on other micros at the time. I think it might have been the Fun…
... book version. But on a Spectrum Emulator, so I left the ... to POKE somewhere into the Spectrum's screen memory. Not sure ... on the ZX81, possibly the System Variables, but I am not sure ... radians."
Maybe the Spectrum differs there and that is ...Strongest aspect of Spectrum BASICWhat would you say is the strongest aspect of Spectrum BASIC compared to other BASICs on other micros at the time. I think it might have been the Fun…
... book version. But on a Spectrum Emulator, so I left ... to POKE somewhere into the Spectrum's screen memory. Not ... on the ZX81, possibly the System Variables, but I am not ... ZX81. For a ZX Spectrum, this would be 255.< ... PLOT. For a ZX Spectrum this would be 175.
Hardware Reference Manual for ZX SpectrumHi, I want to write games for ZX Spectrum in assembly language. I have lot of books in PDF format from SpectrumComputing. Still missing a book lik…
The spectrum is a computer not a ... , with documentation of all the system variables: https://skoolkid.github.io/rom ...Max RAM for ZX Spectrum gamesHow much RAM can be used for single level/whole game? On tape writing.
... all Sinclair and Amstrad ZX Spectrum models, there are two separate ... ROM code, then the BASIC system variables, it’s workspace and maybe ...Which would be fasterSay you want to use a variable value of 0 to 255 in a BASIC program, which way would be fastest? Say for arguments sake you wanted to use two variabl…
... /> 1) Using the standard Spectrum BASIC variables, i.e a and b ... operations
1) normal variables (for example nnn, where nnn ...Using a multiface to exit to BasicBack in the days I was always fascinated with the idea of getting access to BASIC listings inside a program or game. I was able to work a way around …
... available ram and overwrite the system variables, causing a reset if a ...Unprotecting games without knowning m.c.DivIDE or MB02 users don't need unprotected games, but those who still use the Microdrive, Wafadrive, Timex FDD, +3, Plus D, Disciple or use the new …
... and don't overwrite the System Variables and BASIC area.
eBay : Spectrum 'System Test' ZX Interface 2 ROM CartridgeAny of you lot bidding on [URL="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=170256811309&ssPageName=ADME:B:ONA:GB:1123"]it[/URL]? ;)
Any of you lot bidding on [URL="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=170256811309&ssPageName=ADME:B:ONA:GB:1123"]it[/URL]? ;)alternate BASIC ROMI've come up with a few patches to the standard ROM to make it use the 128 shadow screen by default. The ROM is reorganised as follows: RAMTOP is se…
... is set to 0xbfff
system variables start at 0x4000
just ... . On the other hand, the system variables have moved so it's ...Please help me complete this lil'programI'm editing Basic programs that were saved in Timex TOS discs, and every load command starts with LOAD *"filename". If I want to go through these pr…
... with 2 values from the system variables.
I could probably ...Bram Stoker's Dracula - the test adventure: Hard or what??Hi guys, this is a great website. Without the thoughtful people who posted the scanned magazine walkthrough guides for the above-mentioned game, I wo…
... a young boy on a Spectrum system (gave up), the again in ...Jumping to BASIC after importing 23296,1703Sorry for the confusing title. :-D Now that I've learned how to stop a game from starting after loading (in Fuse and Specemu), I have a few more que…
... the way stack, registers and system variables work, but still...
Need help with interrupts againI'm fighting to understand how interrupts code handling works I'm trying to set my simple own interrupt routine, as I don't want to be dependent on …
... 24000. It stores Basic sstem variables normally and Basic interrupt routine ... still seems to mess with system variables memory area.
What ...The INPUT command routine ($2089)I was looking at the INPUT routine with a view to modifying the intro so that I could pre-load the workspace and edit an existing value, rather than …
... a 'LINE'.
All the system variables have to be reset before ...Interesting tip to speed up user experience...Hi Folks, I suspect many of you will already know this but it only dawned on me a couple of weeks ago. Whilst trying to improve the speed on my XIN…
... changing the REPDEL and REPPER System Variables. I thought that lowering the ...Varios +3(e)DOS questions?I'm converting tape games to disk, for being used in my +3e. I'm trying to convert them to standard BASIC loaders, so files could be copied using BAS…
... keep the printer buffer and system variables intact? When doing a read ...What's the POKE that removes the Start Tape message when saving?I'm sure there is one... you could POKE one of the system variables and when you SAVEd it would do it without the pause and the Start Tape message. …
... could POKE one of the system variables and when you SAVEd it ...128 BASIC-compatible way of loading BASIC as code?On a 48K Speccy (or from 48 BASIC or USR 0 mode on a 128K machine), one can do a silly trick like this: [code];; load a 4000 byte BASIC program ld i…
... ix,23552 ; start address of system variables
ld de,4000
system vars to a total crash ...Outputting debug trace to RS232 (assembly)Hi Guys, I'm working on a game at the moment (written in assembly) but I am really needing to write out a debug trace of what is going on with the p…
... guarantee the state of the system variables AND as I am using ...Change PAPER and BORDER colours from machine codeHow do you go about changing PAPER and BORDER colours from machine code? I've forgotten the system variables for border and paper.
How do you go about changing PAPER and BORDER colours from machine code?
I've forgotten the system variables for border and paper.Zero 0.7 / Zero 0.6.5 releasedAfter months of grueling work, I?m proud to announce the Vanilla version of Zero, which is a regular Windows version of the emulator. I?ve tried to m…
... .
? Fixed tool tip for system variables not showing hex number if ...Detecting TR-DOS w/o relying on system variablesOK, I know it's much easier to do this simply by checking whether the BASIC program area has moved or some specific pattern in the sysvars etc (somet…
OK, I know it's much easier to do this simply by checking whether the BASIC program area has moved or some specific pattern in the sysvars etc (sometimes even checking the current value of PC might do). But let's say that, for whatever reason, you wanted ...
