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Detecting TR-DOS from BASICIs there a simple (or contrived :D ) way to detect the presence of a TR-DOS/Betadisk interface from BASIC? For fairly obvious reasons this can't rel…
Yeah, but the address of that REM statement will change depending on whether TR-DOS or Interface 1 is present (since extra system variables will be present)
I'm jsut trying to be awkward now - I know it's possible using this method :) -
Lesser used BASIC commandsAre there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc? The Spectrum BAS…
... map holds the BASIC ROM, system variables, etc. while the I/O ... result.
Each of the variables used in the definition must ... -
+3 disc imaging (idea + SDP)Following a bit of research, which you can probably see in the "old code" thread, I had an idea for a bit of software that may be useful (for me, and…
... random garbage and the protection system can therefore detect a ... something about this disk protection system way back when.....
... the disk, write a few system variables (my own, not the Spectrum ... Return to BASIC, peek the variables out and write to the ... -
how to pass arguments from Basic to MC ?can someone explain me (or give some link) how to pass arguments from basic to machine code? i mean something like this: PRINT USR xxxxx, arg1, arg2:…
... need to set the appropreiate System Variables. ie. see the back of ... -
ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
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// Attach C Variables to Sprite Graphics Declared in ... to do with the Basic system? Nothing usually, but the ULA ... a video frame. The Basic system puts the z80 in im1 ... IY to index into the system variables area. Now since I've ... -
What should I get??I want to add a Spectrum to my collection but having come from the Atari/Commodore/TI/Apple world, I am a little unsure what to get? Something that …
... directly pokes the +D's system variables).
If I was ... , on building your own +D system? If you're technically minded ... -
Lesser used BASIC commandsAre there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc? The Spectrum BAS…
Useful if you want to examine the System Variables... -
Restore Registers Returning to BASICI should really know this, but I've not written code that requires a return to BASIC for a loooong time. What registers need to be preserved / resto…
... they update all the other system variables to match. -
Lesser used BASIC commandsAre there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc? The Spectrum BAS…
Detect if program was loaded from tape or microdriveHow (if at all) can a BASIC program detect if it was loaded from tape or microdrive? This can be helpful to then load the screen or more machine code…
... can you not use the system variables to find out which line ... can you then use the system variables to see which statement in ...for a stupid: what?s NMI?erhm, yes, I?m not familiar with it... :rolleyes: I know the function of a hardware ?snapshot? button from Didaktik M/Kompakt, but I?m not familiar…
... broken, and
b) the system variables and other BASIC structures may ...CLEAR does not RESTORE the DATA pointer??According to the Spectrum manual, one of the things that a CLEAR command does RESTORE the DATA pointer. Either it doesn't actually do this, or some…
I compiled this list of ones that I had come across for css. However they are more an indication of last-minute changes than any poor standards. The book remains one of the best manuals ever.
The ZX81 manual had a minor error in the RND explanation ...The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... liked the single key input system of the 48K), you couldn ... the printer buffer and the system variables in BASIC, but they could ...Emulator for viewing variables dataI am looking for a windows emulator, this emulator can view variables data used in game (tap,sna,z80...). It knew edit variables data. I dont remembe…
... emulator, this emulator can view variables data used in game (tap ... ,z80...). It knew [b]edit variables data[/b]. I dont remember ... debug[b] with items - [b]variables, system variables, breakpoints, memory map, watches...[/b ...CLEAR does not RESTORE the DATA pointer??According to the Spectrum manual, one of the things that a CLEAR command does RESTORE the DATA pointer. Either it doesn't actually do this, or some…
Graphics in Basic??What is the fastest way to draw high rez graphics in Basic. Andrew.
... spectrum manual, the chapter entitled "system variables". This is the place to ...Programs detecting Spectrum modelsHi. I'm curious about knowing how some speccy games detect if they are runnning in a 128k or 48k model. What tricks can be used to make this in a Spe…
... non-basic (hence not requiring system variables) version of woody's code ...Alittle pic of the two different rubber key mats Grey and BlueAnd they are naked too :o Can someone please post a pic of one of the supposed faun coloured speccys i am desperate to see one :) [url]http://www.s…
A very early Spectrum should have the very early manual.
Check out page 176
[url]http://gwearmouth.googlepages.com/p176.jpg[/url]
which mistakenly uses ZX81 system variables in the final programs.Rst #38This, as far as I know, is the ROM procedure that does the keyboard check. (and, at the same time, is what's being executed by interrupt in IM 1 mode…
... reading/writing anything to/from system variables nor having any regard to ...Some things I bet you didn't know about Microdrives...Quote: This can be attached to any 16k, 48k, & 128k Spectrum Computer, it always for increased performance, and more detailed BASIC code. The Micro …
... . It is true that the system (and this is an Interface ... makes use of the NMI system variables NMIADD but no Sinclair hardware ...Spectrum Basic InterpreterHello. I started this days a strange project: an interpreter of the Spectrum Basic that can run in a Spectrum. Here is a very preliminar version: […
... a jump table with few 'system' calls, that way the porting ... is the addresses of the system variables, actually is hardcoded but another ...Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…
... so that you can have variables or equations as parameters.
system variables area) and HL' (for some ...Saving MCI want to save some code from memory with, for instance, SAVE "aname" CODE 40000,500 But I want it to load to 32768 with the LOAD "" CODE command (no…
... . (If it is, save the system variables somewhere else and restore them ...16k Spectrum.How come emulator's in 16k mode don't provide 32 ram-pack support.
...
There are two other variables that the MicroSource understands:
variables (e.g. after compilation ... you can use BASIC variables directly in the assembly code ... 1 can set up its system variables. Just type FORMAT without ...Wanted 10 - 4116 Ram ChipsHi Can any one help I am trying to get hold of 10 4116 RAM chips for a 48K Spectrum. Does any one know who might stock them. I can get a minimum of …
... machine (checked RAMTOP and UDG system variables) even though I know it ...Total amount of memory on a Speccy ?I wonder............ The C64 (excuse me for saying that name in here. I'll hereby name it just "it") has 64k, while only 38k, or so, is available f…
... of it is used for system variables.
The frame buffer ... for the attributes - 6912 bytes). System variable use is pretty trivial ...Total amount of memory on a Speccy ?I wonder............ The C64 (excuse me for saying that name in here. I'll hereby name it just "it") has 64k, while only 38k, or so, is available f…
... ] use the Printer Buffer and System Variables area, they are just not ...Total amount of memory on a Speccy ?I wonder............ The C64 (excuse me for saying that name in here. I'll hereby name it just "it") has 64k, while only 38k, or so, is available f…
... '[B]ZX IF1[/B]' extra system variables are initialized when an error ... ]CLEAR #[/B]' command but the system variables can only be removed by ...Adding AY music to your plogramI'd like to add some nice tune to my program written in machine code. I am not new to assembler programming but with music programming I have no expe…
... ROM code involved with updating system variables is executed. So how can ...Adding AY music to your plogramI'd like to add some nice tune to my program written in machine code. I am not new to assembler programming but with music programming I have no expe…
... ROM code involved with updating system variables is executed. So how can ...
