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IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... except it is easier to read)
I have also ... /> ld a,07Fh ;Trap Space key
in a,(07Eh)
ROM
jp 56 ;for smooth ... -
Reading the keyboardDoes anyone have a code sample to read the keyboard in machine code ?
Why not use the ROM-routine if you want to read just 1 key. You even can use it and alter the routine to scan for more keys pressed. -
Reading the keyboardDoes anyone have a code sample to read the keyboard in machine code ?
... ROM-routine if you want to read just 1 key. ... xor a ; a = current key index
; h = ... e,(c) ; read status of key row
ld ...
scf ; indicate key was registered
ret ... -
Mame issuesI've only recently got hold of the MAME emulator and I thought I'll fire up some old arcade classics and see what the originals were like. Unfortun…
... everyday, but be warned to read a few posts before asking ... , so it comes with a `key` in the zip, you need ... you also need the parent rom Toutrun.zip, and may as ... -
New Compo IdeaI've had this idea and would like to know what do you think about it. I think that most of us here know how to code in BASIC. The problem with Specc…
... the value read will thell you if each key is pressed ... , making it possible to read UDG as characters. You ... printed out is contained in ROM starting at address 5010 ... printed is fixed and in ROM, you may end up ... of more use when using ROM routines in a machine ... -
Key press to ASCII valueI need a bit of code that will give me an ASCII value when the key is pressed. I only really need a-z. I tried using the following code but it only s…
... Heh. Well if the ROM doesn't turn your crank ... in e,(c) ; read status of key row
ld l ... br /> inc d ; another key pressed
jr z, ... code
scf ; indicate key was registered
ret
"Unknown disk format"-error on Spectrum +3Hi, I have just gotten around to changing the drivebelt in my newly acquired +3. I tried to format one of the 3" disks I bought on eBay the other we…
... , swop the disk, press any key other than A and let ... is much more powerful, allowing read, write, load by directory entry ... to send a blank CD ROM or soemthing.
If ...SupadriveHere's an MDR image of Supadrive. Works with Spectaculator, but I haven't tested it with any other emulators. [url="http://www.superfudge.demon.co.u…
... so * READ is a standalone relocatable utility (ROM 1 and ... sector cannot be read then * READ will zero fill ... After issuing a * READ command a blue border indicates ... red border indicates no read. * READ does not verify ANY ... want to press a key to save out each ...USB Flash DriveHi all, Does anyone know if it possible to build a USB interface where one can connect a USB Flash Drive to? These are also called "Memory Sticks" i…
... ,
I thought I read something like that somewhere a ... to upgrade my 48K rubber key and my +2 to use ... it possible to have the ROM on the ZXCF be written ... automatically gets loaded into the ROM on POS and then used ...USB Hardrive enclosures.I have invested in a USB hardrive enclosure and a 40Gb laptop hard-drive as my USB stick was bulging at the seems. Now these devices power and run t…
... way as stopping a USB key, via the little green ... . From what I have read about such things both XP ... this respect its the USB key makers responsibility to provide ... If you got your USB key came with a magazine there ... with a small 6cm CD ROM with the 98 drivers ...How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
... keyboard scanning routine from the ROM, does it only update the ... a routine to read ascii char of a key pressed. Maybe you ... all forgotten to mention -- the ROM interrupt routine assumes the IY ... using IY because otherwise the ROM will be poking values indexed ...Game ideaThinking of a game that could enter the Minigame compo I came to the following idea for a game, although it might not fit 1K or 4K: A mazed snake ga…
... :
Check on keypress and read pressed value in A in ... by using EI and the ROM routine.
[code]
jr z,nokey ; when a key is pressed A holds the ...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 …
... ;" Desculador de cabeceras PRESS A KEY":PAUSE 0
40 CLS ... :FOR a=50000 TO 50013:READ b:POKE a,b:NEXT ... /> 205,86,5 CALL ROM (Load) ;Execute ROM's LOAD BYTES
Why are we here? (At WoS)No, not a deep philosophical question about the nature of life, the universe and human existence. The thread “what does your partner think of …
... to the PC, I read that when you loaded up ... had the Complete Spectrum ROM disassembly very early on).[/quote ... And I loved the single key entry function - when you ... of this, the single key entry, the 48K's ... +, except for the single key entry). The Speccy lost a ...Start Tape, Press any key...Hi, I'd like be able to save (program or data or code) using the save "whatever" command, but I want it to start recording immediately, rather than …
... activity!
I've read the threads and I'm ... is the check whether a key has been pressed routine. I ... will see the "press any key" message on the screen (ie ... it. Check out the excellent ROM disassembly page at Geoff's ...48K games that don't work on a +2Not sure if there is already a thread about this but recently I've noticed some old 48K games will not run on my +2 - even in 48K mode. Examples are…
... ($FF) at end of ROM (around $3900 if memory ... br /> 3) The original 48K ROM is different to the 48 ... ROM on 128 machines. In particular they modified the IM1 routine, key ... work. See Geoff's ROM disassembly for a better ... Some games seem to read or write to random ...Any BBC aware Specchums out there?After the UK101 and VIC20 emulators I've moved my sights onto emulating a BBC computer. This emulator will be different though in that it will be a Z…
... C libraries.
[*]OSBYTE 160 - read VDU variables, helps VIEW work ... 't actually alter the cursor key behaviour at present. Implemented to ... variables before running the language ROM.
[/LIST]
I ...ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …
... the routine in Spectrum's ROM, there's only one ... break ; If A is OFFh read a new envelope.
... .
IN A,(254) ; Read keyboard.
CPL ; Complement result ... , keyp ; Jump if a key is pressed.
INC IX ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... until a key is pressed which doesn't use the ROM or ... bit confused me until I read your explanation! Just in case ... NOT to be pressing a key isn't it?
+3 Centronics port: How does it work?I've been trying to follow the code with Fuse's debugger and I can't see it writing anywhere except to port 0x1ffd. It also jumps through some fairly…
This is the code from ROM 1 that outputs a ... ports:
;#0ffd
; Read: bit 0 = busy signal from ... /> 221a 01fd0f ld bc,#0ffd ;Read busy bit
221d ed78 ... /> _Check_BreakSpace
;Check for space key
2c6b 3e7f ld a ...Should I buy a Sam Coupe?Hi folks I been interested with the Sam Coupe since Miles Gordon Technology released the SAM as the successor to the Spectrum. Are their any SAM us…
... in-ports are read as 95 when no key is pressed. So ... Spectrom ROM to return 191 instead of 95 when no key is ...The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…
... 's now using the standard ROM font via some cunning paging ... reading (so that LOAD will read blocks from it)
[*]Open ... just blindly assign two more key combinations for the other two ...SAM programmingHi Can anyone provide any example hello world or graphics/sprite printing style machine code routines for the SAM? I can't seem to find anything rem…
... emulator) with original ZX48 rom in low 16kB and ... to use the Spectrum ROM and environment just for ... br /> in a,(254) ; read keyboard
cpl
... no_key ; loop until non-extended key pressed
...emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…
... emulator with pc function key for the mulitface nmi button ... support and cant even read a real hdf atom ... sam coupe- the speccy rom version and tap versions ... wont work without hardware rom interface?
10. ... how does the emulator read the monitor driver to ...emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…
... has a pc function key for the mulitface nmi ... support and cant even read a real hdf aotm ... versions wont work without hardware rom interface?
... compiler does not allow CLEAR, READ and DATA.
read those otherwise life would ...Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…
... microdrives.
I've read somewhere about if1 serial port ... other than a 48K rubber key model. I don't believe ... ] has mapped in some shadow ROM for his Spectranet device to ...What Spectrum to choose?Hi i'm new to the Spectrum. I read 'bout it in CDA (Polish game magazine) and watched LGR review of the 48k and it REALLY interested me. What model m…
... the 128K toastrack has "buggy" ROM. The Grey +2 (and other ... tape deck, which I have read causes some problems when loading ... rate the + over the rubber key version, at least it has ...Compiling Basic to MCHello, I have a lot of long Basic programs. These are mostly strategy programs, good but slow. I was thinking about how to speed them up without com…
... interpreting sometimes, calling the rom, or emmbeding the entire ... /> 5 PRINT "PRESS A KEY": PAUSE 0
10 ... to compile the f*cking READ, DATA, RESTORE (and ... /> 10 PRINT "PRESS A KEY": PAUSE 0
20 ... 5: RESTORE a
40 READ v1, v2, a$
...2 48K speccys dead..Hey guys! I've got two of our rubbery friends with me that need some help. They've been like this for some time, but I would like to try and fix th…
... / service manual to see which key in the keyboard matrix relates ... on-off contact that holds (read: a switch, temporarily soldered to ... ](..) but I noticed that the ROM was really really hot!
