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VariablesVariable Help: Can BASIC discriminate between odd and even variables? If so, what simple syntax can express it?
Variable Help:
Can BASIC discriminate between odd and even variables? If so, what simple syntax can express it? -
QuickBASICQuickBASIC Emulation: Is it possible to declare and pass global variables throughout a program along with confine a local variable to just a module-…
... along with confine a local variable to just a module-level ... -
New! CSW.dll for windows based emulators!Hi all, There now exists a new library of routines for windows emulators which allows access to both csw and csw2 files. It's written in pure x86 as…
... 's written in pure x86 assembly and weighs in at a ... />
Which also contains the assembly .inc file for use in ... -
Decimals, bcd etc in z80...Working bloody full-time on my Ragnar Revival game right now - just finished the basic sprite engine and before I go on coding the actual 3d engine (…
... will contain an ordinary score variable as well as a time ... at a time. The score variable however should perhaps be implemented ... -
InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... value in the NMIADD system variable (23728) if it was non ... -
Collision DetectionHi everyone, This is my first post on WOS. Like most people here I owned a Spectrum when a teenager. At that time I was quite heavily into programmin…
... doing a bit of Z80 assembly programming again and am hoping ... -equal-to type comparisons in assembly.
Any tips, will ... -
ASSEMBY party's zx-stuffSpectrum thingies from Assembly (and results) are here: [url="http://scene.org/dir.php?dir=/parties/2004/assembly04/"]http://scene.org/dir.php?dir=/p…
Spectrum thingies from Assembly (and results) are here: [url=" ... -
???? 2Anybody here know how to program z80 ???? Anybody here know assembly / machine code ??? Anybody here know how to locate cheats / pokes ???
Anybody here know how to program z80 ????
Anybody here know assembly / machine code ???
Anybody here know how to locate cheats / pokes ??? -
A few questions regarding EmuZwinA few questions regarding EmuzWin 1. I have been trying to write a program to generate multicolour effects on the Spectrum,ie more than 2 attributes…
... 't seem to affect the assembly, but I was just wondering ... -
A few questions regarding EmuZwinI had posted this in the development forum and then remembered there was an emulators forum, so apologies for the repetition. 1. I have been trying …
... 't seem to affect the assembly, but I was just wondering ... -
???? 2 Anybody here know how to program z80 ???? Anybody here know assembly / machine code ??? Anybody here know how to locate cheats / pokes ???
Anybody here know how to program z80 ????
Anybody here know assembly / machine code ???
Anybody here know how to locate cheats / pokes ??? -
Sprite Graphics TutorialHi everyone, Would like some feedback on the following: I am thinking of writing a Sprite Graphics Tutorial, ie. how to best program and implement …
... on a spectrum with annotated assembly listings.
I just ... -
Character SetAlright, this may not be the right forum for this question (it does sort of relate to a game which I'm trying to get working properly - long story) -…
... anybody know where the system variable is that points to the ... -
what extra port for extra memory ? (256K, 512K, 1024K, etc.)I know that Pentagon uses some extra bits from port 7FFD for extra memory pging: - for 512K model, bit 6 & 7 of port 7FFD - for 1024K model, bit 5, 6…
... account the actual BANKM system variable. By using those bits for ... -
I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... I know no C or assembly. I would like to write ... -
Char Based SpritesI've been looking at Rob's assembly example for character-based sprites in the other thread with interest. However, I find I'm not following it very …
... been looking at Rob's assembly example for character-based sprites ... -
New ZX Spectrum GameAfter much posting on the development forum, and collecting many many Spectrum Assembly Language books, I am now about to embark on a new game which …
... , and collecting many many Spectrum Assembly Language books, I am now ... -
Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling. As promised here is the code for the routine. It's pretty long and fairl…
... of the source file for assembly, or a snapshot. I don ... -
Need some help making a BASIC gameI'm creating a text adventure in 128 BASIC (I don't like using the 'keywords' in 48 BASIC - It's slow and annoying!) called "The Legend of The Red Dr…
... , it is stored in a variable. If the command matches one ... -
There's a bug in my Speccy, Dear Liza, Dear Liza...Hi guys, Just me being annoying again - Can anyone out there in 'Internetland' help me with ideas about what could be causing a bug in my Speccy em…
... have been in the LDDR assembly language instruction, as the bug ... -
Chuckie Egg EditorI suppose you could say this was MIA, in as much as nobody knew it existed. In 1985 I wrote a Chuckie Egg Editor, and apart from copying it for a fe…
... the program changes a system variable so it crashes when you ... -
Announce Pasmo 0.5.1Hello. New release 0.5.1 of Pasmo, multiplatform Z80 cross-assmbler. The main news are related to macros: the MACRO parameters now are expanded ins…
... now can have a loop variable.
Available as always ... -
Write to ROM=crash?I've read in quite a few places that writing to the ROM causes a crash but on the assembly listing the comments for poke say: "Happily no check is ma…
I've read in quite a few places that writing to the ROM causes a crash but on the assembly listing the comments for poke say:
"Happily no check is made as to whether ROM or RAM is addressed."
Does this mean that pushing a value when SP -
How to detect 48k modeHow can you detect if a 128k machine is in 48k mode (from an emulation point of view, not via BASIC or machine code)? Checking the current rom? But …
... bit 4 of the system variable FLAGS? But could this be ... -
String slicing for UDG definitionHey everyone. Got a bit of a string slicing/string to variable conversion problem. 10 let a$="01100110" 20 let pokevalue=???? What expression do I…
... a string slicing/string to variable conversion problem.
10 ... -
BEEPing in assemblyI'm using Z88DK and I'd like to know how to produce BEEPs. I know it's a matter of writting very fast to a certain port, but I've read somewhere that…
I'm using Z88DK and I'd like to know how to produce BEEPs. I know it's a matter of writting very fast to a certain port, but I've read somewhere that there's a ROM routine ready to be used. Any info on this? How would I code some kind of "BEEP 1,0" using ... -
PCB Differences...any advice ??Hi, apologies in advance for posting this in this forum, but I was not sure where else to get an answer for this one. can any one give me some info…
... simply from a differnet manufacturing/assembly company or country?
[Scanatron] "The Double" EditorComing soon :roll: Following on from [url="http://www.worldofspectrum.org/forums/viewtopic.php?topic=8925&forum=2"]this[/url] thread and with renewe…
... a toughie due to compression, variable team data and no bytes ...
