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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…
... a,2 ; upper screen
call 5633 ; open channel
ld de ... ; length of string to print
call 8252 ; print our string
SpecBAS 0.830 Released!Hi guys - A new official release of SpecBAS has been released. The full changelog is below, but for now here's the download: [url]https://sites.goo…
... COPY to override behaviour
SCREEN$ - as from Sinclair BASIC, identifies ... optional numeric argument - DO 35: PRINT "X": LOOP will loop 35 ... primitives (CIRCLE, PRINT etc) can now use alpha channel information and render ...SpecBAS 0.844 releasedHi all - it's been a while... Having some unexpected extra time off work, I've been able to get some work done on SpecBAS and it's now a bit more …
... rather than just embedded in PRINT or TEXT commands
... now work properly again :)
SCREEN$ now raises an error if ... /> Embedded SCALE commands in a PRINT command now reset after the ... than only in the left channel
PEEK$ left the ...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…
... ; 2 = upper screen.
call 5633 ; open channel.
ld a ... vertical position.
rst 16 ; print it.
ld a,(ycoord ... 16 Why/what does this print to screen?
ret - returns ...how to fix instructions on screenI have a problem with my sequencer. I want the top half of the screen to stay fixed but allow the note values to print without pushing the instructio…
... the screen to stay fixed but allow the note values to print ... without pushing the instructions off screen. I would ... rather they print horizontally 2 digits ...ROM PRINT routine issuesHi all, I am using the ROM print routines a lot in my assembly program and I'm experiencing issues. I am changing the system variable DF CC to po…
... resuming as normal, knocking subsequent PRINT commands off by 1 character ... . I'm assuming the ROM print routines are updating other system ... check what 1/3 of screen is being written to but ...
CALL 11747. PRINT CONTENTS OF BC TO SCREEN
Any ..."ZX80 Brain" RPN CalculatorIt is at times like [url=https://www.worldofspectrum.org/forums/discussion/54176/depression]when threads such as this are posted[/url] that I get the…
... /> I'd already written a screen-drawing routine for a "ZX81 ... on the screen" by temporarily turning on the BRIGHT channel for that ... />
- only keys shown on screen will actually do anything
PRINT something on the stack, and ...High score table routineI wrote this general purpose high score table routine. It stores 5 scores and displays them alongside the player names, which are 8 characters long. …
... clean the screen
LD DE,POS_1 ; print first player ... CALL PRINTNUM
; ---------- PRINT COLORED ROWS ---------
LD ... ; upper screen area
CALL 5633 ; open the channel
...Speeding up PRINT code in ROMHi Folks, I seem to recall that someone stated the PRINT command is rather slow because it has to handle screen and printer printing - is this cor…
... the PRINT command is rather slow because it has to handle screen ... it only prints to the screen i.e. "commenting out" the ... was done, would it make screen printing significantly quicker?
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 string ... ; y coordinate.
rst 16 ; print it.
ret
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…
... ($2294)
call 3503 ;clear screen, open channel “S”
ld ... of string
call 8252 ;print string
;A ... br /> ld de,s_shf ;else, print S. SHIFT
ld bc ... /> ld de,c_shf ;else, print C. SHIFT
ld bc ...Print vs 23659To be honest I could not think of a better topic title, although its not ideal. Anyway, I do recall reading ages ago that the reason you cannot no…
... a PRINT AT 22,(whatever) is because it is the lower screen ... POKE 23659,0
20 PRINT AT 22,0;"Yes we ... POKE 23659,0
20 PRINT AT 23,0;"Some text ... is always seen as "lower screen" then surely either both 22 ...Random-Access to Microdrive FileI am working on a BASIC program to backup a microdrive text-file to standard tape array-file. To backup a text-file from one microdrive to a secon…
... /discussion/33911/copying-a-screen-in-zx-basic-in- ... in OPEN# Channel-area and forcing the re-PRINT# of the ... [b]CHA[/b] is the channel N address
[b]MAP ... ,0
330 CLS : PRINT "Block ";r+1
... FN h(511)
1430 PRINT #N;CHR$ PEEK (cha ...printing to the screen using pokei remember there being a way to print to the screen using pokes, which would allow you to print a character anywhere in the 175x255 matrix. can anyon…
i remember there being a way to print to the screen using pokes, which would allow you to print a character anywhere in the 175x255 matrix. can anyone remember?Printing text using direct screen addressingHaving some problems printing using the FASE engine which is currently defeating me. Hoping to have someone clear out the bit of fog currently dwell…
Having some problems printing using the FASE engine which is currently defeating me. Hoping to have someone clear out the bit of fog currently dwelling in my brain for this function. I'm trying to get the text working properly in 128k mode which uses ...PAPER&INK: screen/character differenciation?So I was looking at a type-in listing earlier and I got to wondering how the Spectrum differenciates between knowing that the PAPER/INK commands need…
... commands needs to change the screen background/text colour or just ... to be part of a PRINT statement but how does the ...machine code basicsWondered if anyone can help me out. I have been playing round with some disassemblers (Zeus). And Machine code loaders. All I want to do is print my…
... /> If you want to use PRINT AT or INK or PAPER ... to initiate
i.e. PRINT AT 10,10;"a" = DEFB ... -screen start with PRINT USR 50000, or open the right channel
(main screen ...Memory usageBrowsing the online documentation for the Spectrum I came across a peculiar discrepency. As we all know the start of the RAM is at 16384 which is whe…
... this area for the BIG PRINT routine.
The ... system variables in the printer channel(s).
This is ... about in memory when you print.
I've resurrected ... the system variables following the screen memory at 23296.
42 column text, Sinclair Print Utilities, etcI'm currently developing the next of the ZXIF text adventures - "43 Minutes" and, as a side issue, I'm really interested in 42 column text for this g…
... stream identifier - would just print to the screen in normal 32 column ... text).
The Print Utilities ... and passed out to channel S (ie, the screen). In order to ...Making a mapI should learn Z80 assembly, but I don't have the time (really busy) and I feel like making a game. I've tried with Colt which gives me enough speed…
... "editing area" and PRINT USR does in the screen area... I get ... will go to the chosen channel
(Mind you AT Y ...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…
... /> 10 REM START AFTER REM : PRINT "HELLO"
POKE ... can read them in a SCREEN$. [Dr. BEEP]
* ... REM COLLISION
20 PRINT AT Y,X;"*": LET OY ... one indicates that the print output is to be ... 255*PEEK 23614
20 PRINT PEEK A; TAB 10; ...Fixing Attribute Clash via emulationI'm sorry if this has been posted already, but is there a possibility to fix attribute clash via emulation? I'm not talking about RealSpec or any of …
... ; Clear the screen.
ld a, 2 ; Open channel 2.
call ... open_channel
ld de, string ; Print the ...Poke 23739,111So, I'm looking at some of my old loaders (BASIC stuff) to work out how I got the display to not corrupt on loading code. It's the old POKE 23739,111…
... address of the current channels print routine (yes, the address of ... address of the print routine for the selected channel, and jump to ... is point the current channels print routine at a RET instruction ... the screen I need to find the address in ROM to print ...Probing the variables in 128K modeHello again! Briefly, I'm writing an m/c routine to read some BASIC variables. So, before I start, I try to get an idea for the structure of how var…
... worth specifically opening an output channel at the start e.g ... consistent results whether you use PRINT USR 50000 or RANDOMIZE USR ... ROM keeps track of which screen is in use. It is ...Probing the variables in 128K modeHello again! Briefly, I'm writing an m/c routine to read some BASIC variables. So, before I start, I try to get an idea for the structure of how var…
... worth specifically opening an output channel at the start e.g ... consistent results whether you use PRINT USR 50000 or RANDOMIZE USR ... , the routine instead appears to print the listing of the current ... load of garbage in the screen.
Again I will ...Saving a complete SCREEN$ in BASICI'm trying to save a SCREEN$ to a tape file (basically the original data is in a .tzx file that I'm trying to save in a .tap format) but the problem …
... did was redirect the normal screen print routine to a null ... ROM wouldn't print out "Bytes:..." etc, ruining your screen$).
... You can do the same for the Keyboard channel ... by doing:
[CODE]POKE 23734,111 : SAVE "PIC" SCREEN ...IF2 Rom snapshot creationHi, is it possible convert a Speccy 16k snapshot to a Interface 2 Rom file? I've the original Ultimate Pssst, Cookie, Trans-am and Jetpac tapes and …
... $A000 and PRINT USR it (otherwise output goes to channel #0). ... /> ;00 = BASIC
;01 = SCREEN$
;02 = CODE
PUSH ... CALL prmsg
DEFM "Loading SCREEN$"
DEFB $0D+$80
screen$
LD (recode),DE ...
