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What Z80 development tools do you use? What books?Hi. I've been meaning to do it for over 25 years, but.. better late than never :) I'm starting to learn machine code and am trying to get a developme…
... ; upper screen
call 5633 ; open channel
loop ld de,string ... -
Howto paint a squared zone of the screen ?You know what guys ? i begin to love this languaje. Cant understand why not put more effort on the 80's to learn it :( because it is really speedy. …
... ..
ld a,2 ;open channel 2...
call $1601 ;to ... -
Is converting Microdrive formats possible???Hi. First post. I'm a long-time Speccy owner, was lost, but found my way home! :D I have a Disciple as well... Now to my question, but first the …
... an emulated PlusD setup, I OPEN'ed a microdrive stream and ... altering the MGT PlusD "OPEN" channel code to open a file of type ... to be a way of OPEN'ing anything other than OPENTYPE ... -
editing strings with INPUT LINEHere's the latest in my unpredictable series of utility routines. This one I needed for the SAGE game editor; it emulates INPUT LINE l$ but with the …
... />
EDIT_L: ld a,$01 ;open channel 'K'
call $1601 ;CHAN_OPEN ... -
trying to read keyboardI have the speccy in interrupt mode 1 I used 'IM1' in assembly language then Im printing the contents of memoryu area 23560 to the screen: [quote] l…
... ,#2 ;channel2
call #5633 ;open channel
ld a,#22 ... -
MC LPRINT 23681Having problems with this routine to print large on the screen using LPRINT, it works ok in BASIC, but cant seem to get it to loop for some reason in…
... ld a,3 ;channel 3 printer
call 5633 ;open channel
ld ... -
Help with Assembly - DEFB, etc.Dear all, I'm going through Jnathan Cauldwell's tutorial and find myself scratching my head at part I can't find a decent explanation of anywhere! E…
... ; upper screen
call 5633 ; open channel
ld de,string ; address ... -
z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... = upper screen.
call 5633 ; open channel.
ld a,21 ; row ... accumulator and opens the appropriate channel (top of the screen)
Can't Get My Simple Code To RunHello again, I'm trying to run the following simple code: [code] org 32768 main ld b, 21 ; x coordinate is …
... ; upper screen
call 5633 ; open channel
call 8252 ; print our ...A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…
... )
call 3503 ;clear screen, open channel “S”
ld de ...Random-Access to Microdrive FileI am working on a BASIC program to backup a microdrive text-file to standard tape array-file. To backup a text-file from one microdrive to a secon…
... write" back to the same OPEN#ed microdrive stream, without the ... POKEing a few byte in OPEN# Channel-area and forcing the re ... /> [b]CHA[/b] is the channel N address
[b]MAP ... .
The following program OPEN#s the stream and prepares ...Fixing Attribute Clash via emulationI'm sorry if this has been posted already, but is there a possibility to fix attribute clash via emulation? I'm not talking about RealSpec or any of …
Getting started with asm Speccy codingSomeone on another forum I read has asked for good Speccy coding resources. I thought it would be great to link him to a simple tutorial about how to…
... upper screen
CALL 3503 ; Open Channel
LD A, 22 ; AT ...Getting started with asm Speccy codingSomeone on another forum I read has asked for good Speccy coding resources. I thought it would be great to link him to a simple tutorial about how to…
... upper screen
CALL 3503 ; Open Channel
LD A, 22 ; AT ...What Z80 development tools do you use? What books?Hi. I've been meaning to do it for over 25 years, but.. better late than never :) I'm starting to learn machine code and am trying to get a developme…
... ; upper screen
call 5633 ; open channel
loop ld de,string ...'Hello World' in ASM ?Can someone show how to make the classic 'Hello World' print with ASM code ? I cant figure at this moment how to insert and handle strings with the s…
To print in the main area of the screen, you have to open channel #2. Add this code to beginning of the program:
[code] ld a,2
call #1601[/code]Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... BASIC
ld a,2 ; Open channel 2 (screen)
call CHAN_OPEN ...Override AUTOLINE start?Hi there, Is there a poke that prevents a BASIC program from auto running, when it was previously saved with the LINE command? Cheers, Steve
... screen
CHAN_OPEN equ $1601 ; Open channel (A = 2, upper screen)
ld a,2 ; Open channel to upper screen
call ...SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…
... :
ld hl, (prog) ; a channel must be created below basic ... /> ld bc, 5 ; the new channel takes 5 bytes
call ...
ld (hl), 'S' ; channel type; 'K', 'S', 'R' or ... , move down 8 pixels and open channel 2 to
call dwncr ...Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... down 8 pixels
;and open channel 2 to deal with nasty ...RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... you want to use another channel number, just change the value ... create the stream, then simply open channel [B]#4[/B] and use ... a, 0x04
call 0x1601 ; open channel #4
...
ld hl ...Beginner questionThis might sound and be daft.... I've just been reading J Cauldwell's "how to write a Spectrum game" but was thinking of writing something in C as I…
... /> #include
...
zx_openchan(2) /* Open channel 2 */SUPER INPUTA couple days ago I searched for an "INPUT string" routine that I could use in Assembly programs and supported multiple lines, but I found none. Thus…
... bc
ld a,$01 ;open channel 'K'
call $1601 ;CHAN_OPEN ...question re. STR$ bugCould someone point me to whereabouts in the ROM this goes wrong? [code]PRINT PAPER 5;1;STR$ 234[/code] (Only the "1" prints in cyan.) It's not the m…
... ;633114]READ_IN opens the specified channel ("K" in the case of ... ]1638 OPT FNorg(&1638) ; Open channel 'K'
1638 FD CB ... to get INPUT working from channel "S" ;)PRINT a numerical value i.e. the scoreHow do you fo about printing a numerical value using the print routine in the ROM? For instance I have a value 0-255 and want to PRINT the result at…
... ;upper screen
call 5633 ;open channel
;
ld a,22 ...FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... a, 4
call $1601 ; open channel #4
ld a, 'Z ... a, 4
call $1601 ; open channel #4
ld hl, STRING ... is to simply remove the channel initialization part from the FZX ...FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... a, 4
call $1601 ; open channel #4
ld hl, STRING ... tape
Does opening channel 4 affect anything else in ...MC LPRINT 23681Having problems with this routine to print large on the screen using LPRINT, it works ok in BASIC, but cant seem to get it to loop for some reason in…
... ld a,3 ;channel 3 printer
call 5633 ;open channel
ld ...MC LPRINT 23681Having problems with this routine to print large on the screen using LPRINT, it works ok in BASIC, but cant seem to get it to loop for some reason in…
... ,3
call $1601 ;CHAN_OPEN open channel A
ld l,8 ...
