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how do i read the keyboard in assembly? here is the code i tried writting to find out the value of a key call 28f (hex) loop: ld a,255 cp e jr z loop ld (50000),e ret notes from what i …
... not use the intrupt keyboard scan?
[code]
ld ... /> ld (hl),a ; reset last key pressed
wait4key cp (hl ... is scanned and when a key is pressed, the value of ... an intrupt and read the key which is pressed
< ... -
Beginner InfoI have trying to find some hardware information for use with assembly coding but havn't had much luck. For instance. How do I redirect the vertical …
... functions are for detecting single key presses. For detecting multiple ... and returns a 16-bit scan code. This function uses the ... is returned is the scan row the key can be found on ... the specific key.
in_KeyPressed.asm
Takes the scan row ... -
Beginner InfoI have trying to find some hardware information for use with assembly coding but havn't had much luck. For instance. How do I redirect the vertical …
... row that has a key press and then jumps ... are pressed (only one key pressed is allowed here!). ... /or SYM with a key, special consideration is given ... (you supply ascii code, scan code gets stored). It tests ... those five scan codes to construct the ... -
Games you wish you'd finished but never did.Has anyone got a speccy game they really wish they'd finished, but never did/could, or just never got round to it. Here's a few of mine: Airborne R…
... the layout and the map key that I had actually began ... to it.
I can scan it and send via e ... -
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…
... fefe ; get ready to scan all rows on keyboard
inc d ; another key pressed
jp z, ... table
scf ; indicate key was registered
ret
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…
... used in_Inkey() and in_WaitForNoKeys() to scan the keyboard. in_Inkey() will ... test whether an individual key is pressed and will ... mask off a particular key in a key row. A couple ... -zero value if that particular key is currently pressed. in_JoyKeyboard() ...How to speed up TZX loading (emu development)With many newer emulators there are options to do faster loading schemes, even for turbo-loader or protected loader blocks in TZX files. For example,…
... succession. The routine would then scan forward to the next edge ... code can (hopefully) have some key characteristics determined from the data ...z88dkHello. I'm an spanish user of spectrum (and naturaly of this page). I have a question. I want to start to program games with z88dk, but I need a goo…
... than printf. printf has to scan the string for the %c ... subroutines: fgetc_cons to read a key, fputc_cons to print an uninterpretted ... interrupt routine to scan the keyboard and write the key read to ... good for typing and implements key repeat. If you wanted to ...The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... could interrupt on a specific scan line rather than always at ... 48k's ROM with single key entry (there was a < ...The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... could interrupt on a specific scan line rather than always at ... the TOF, BOF and each scan line. That's what I ... 48k's ROM with single key entry (there was a < ...Spectrum +2a Keyboard bug?If anyone has a Working +2a... I bought a +2a for Christmas 1986 with an 80 Column thermal printer from Dixons. It was bundled with a tape supposed…
... of a scan, the hardware is checking the number key having already ... checked the shift key and found it to be ... being to get the shift key active before the number. It ... ROM to only recognise a key after it was valid for ...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…
... avatar key, in fact... seeing as that was a doctored scan of ...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…
... avatar key, in fact... seeing as that was a doctored scan of ...ZX spectrum as a PC usb keyboard?One of my commodore brained friend showed me an interface which converts the keyboard of c64 to a standard usb keyboard. I quickly searched this for…
... are all started to forget key-keyword layout)[/QUOTE]
scan the Speccy keyboard and send ...2007, and still no NIC and browser for the Speccy?I've started to read all the w.o.s. threads, starting by the ones that came up with the search function, using the keywords of the topics that intere…
... br /> hpause 2DUP [CHAR] ; SCAN 2OVER BL SCAN NIP OR NIP 0 ... />
: browse
BEGIN KEY DUP BL = IF SINGLE THEN ...
SINGLE TRUE TO dialog? KEY DROP goodbye ;
... (PKGERR)
' comkeys IS (KEY)
' beep IS (ACC_EVT)< ...Question about Type-ins and OCR.Hi guys. I've never used OCR software before (yep, I've been living in a cave). What software do you guys use when you want to send something to Arj…
... ; white pictures if an initial scan doesn't produce good results ... lot quicker than the one-key-per-character method.
Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…
... E1, E2 etc on the scan.
I`m only saying ... idea, was to get a key to access the end of ... the screens to get the key and return the way you ... have it so when the key is picked up, it will ... for the room with the key.Zx Spectrum Laptop (again)I've been reading all the old treads about a possible portable speccy. I even found the one about the Speccy Laptop. But it seems there's a lot of ne…
... going to portablize a rubber key Spectrum you could switch out ... - so a simple counter to scan RAM is out of the ...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…
... it fewer keyboard blocks to scan?
[/quote]
You ... /> ld a,(hl) ; get key row to scan, top byte of port ... )
and (hl) ; select which key in row to pay attention ... sure all my user-defined key routine and joystick routines return ...Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... then advances to the next scan line in the next line ... in_Inkey() (return ascii code of key currently pressed or 0 if ... to move down a single scan line. The spectrum.h library ...Spectrum Ethernet update...in which a toastrack 128K machine prods a machine outside of my LAN for the first time. [url]http://spectrum.alioth.net/doc/index.php/Current_eve…
... from it, before attempting to scan it yourself (see the IF1 ... just copied this bit!)
[*]Scan the line for your own ... to check for the BREAK key and cause error $14 (L ...Ultimate earlier gamesI mean those Ultimate's games before [I]Atic Atac[/I]. Which is your vavourite? My fave, Jetpac. Very addictive, great gameplay.
... something to do how you scan the keyboard from machine code ... saved by just use one "key area", but as the playing ...Ultimate earlier gamesI mean those Ultimate's games before [I]Atic Atac[/I]. Which is your vavourite? My fave, Jetpac. Very addictive, great gameplay.
... something to do how you scan the keyboard from machine code ... saved by just use one "key area", but as the playing ...VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…
... taking 775T for an empty scan. Key presses have additional overhead as ... exact table position during the scan, calculating it only when ... . In particular, replacing the key scanning and screen scrolling functions ... if you hold a key while it's scrolling!).Amiga/Atari ST Emulator?Right, I already have Spectrum,SNES,NES,MAME,N64,Megadrive,ScummVM on my computer... I now want to venture into the Amiga/Atari ST Emu Scene!!! (Reli…
... (or at least different TV scan rates). I've only used ... ]Yes, or just define a key (say F12) to do the ... 't "press" SHIFT and another key with that, and anyway you ...Keyboard routinesI'll ask here first - since this must be a long-ago solved problem, and hopefully I can avoid re-inventing the wheel... I need a keyboard routine th…
... ASCII-code and implement key-repeat and key-debouncing. In fact, ... small state machine to manage key repeat, debounce, etc.
... keypresses by looking up a scan code for the particular ... that scan code to a function to determine if that key combination ...Troubles with MAMEMAME has never been a program that I mastered... for some reason I once downloaded a MAME32 that had tons of games, managed to put it to work and tha…
... you must have Mame to scan for the roms first.[/QUOTE ... .......it's on a function key too....might be F5 when ...Brand new River Raid remake?one of my friend is trying to make a riverraid remake on flash just to have fun, I checked zx spectrum port of river raid. it is bad, really bad, jer…
... writing to the attributes between scan lines. I've only ever ... . I'd think that the key to getting it working would ...faster bitwise operators?well, sinclair basic lacks bitwise operators and I searched "basic forum" with keyword "bitwise" and only 3 thread came up. So the forum also lacks b…
... consectuative bytes (1 if key pressed; 0 if not). ... HL=Memory location to dump key state
LD BC, ... C, skip1 ; Skip if "Key Up" (Change to JR NC ... 61438 ; Keyboard Half Row to Scan (09876)
SaveLoc: ... 5 bytes of half-row key data
...How to connect a computer monitor to a Spectrum ?Is it possible to connect a computer monitor to a Spectrum 48K ? An how to do it. What is needed ? Reason: I live in Denmark and here you MUST pay TV…
... an additional box called a "scan doubler". I don't have ... of circuitry for a rubber key machine, you need to feed ...
