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Why did the Commodore 64 lose to the Spectrum in the UK?The Commodore 64 was released in the UK in 1983. As we all know, it was a great machine from a US company with a much larger financial backing than t…
... few speccy owners went on to own amiga's after.. you ... fast. wireframe / isometric again due to 64 hardware , speed wise on ... as it's directly writing to screen. in aspects that continued with ... the sense you had an assembler from boot.. I think that ... -
Where does the BASIC program sit 48K Spectrum memory?Hi there First post so be gentle, I've had a spectrum since the 80's and have recently started programming it for fun again. I wrote the followin…
... GOTO 200 (and wait). To see the screen get drawn back from ... /> 198 STOP
199 REM screen to mem
200 FOR i ... STOP
219 REM mem to screen
220 FOR i=58368 ... PAPER 2: FOR i=0 TO 21: PRINT AT i,0;"********************************": NEXT ... -
Arrays in BASICHi so I'm making this crappy game and I wanna store the screen positions of some UDGs in in a 50x2 array cause I have 50 characters. So I made the ar…
... br /> PRINT AT 22,0;"AT 22,0 to ...";AT ... /> "AT 23,0 to ...";TAB 27;"23,31 ... so TAB has to be used to address positions on ... FOR r=20 TO 23:
PRINT #2 OR r& ... +1:
PRINT CODE SCREEN$ (23,31): PRINT ATTR (23,31 ... -
Arrays in BASICHi so I'm making this crappy game and I wanna store the screen positions of some UDGs in in a 50x2 array cause I have 50 characters. So I made the ar…
... br /> PRINT AT 22,0;"AT 22,0 to ...";AT ... /> "AT 23,0 to ...";TAB 27;"23,31 ... so TAB has to be used to address positions on ... FOR r=20 TO 23:
PRINT #2 OR r& ... +1:
PRINT CODE SCREEN$ (23,31): PRINT ATTR (23,31 ... -
I'm writing an Operating SystemOkay this might seem like a bait thread, but I am legitamately interested in figuring out how to write a multi-process system for the ZX Spectrum (no…
... the ROM print char routines (I'm trying to get ... not going to use FZX from BASIC with PRINT #4, ... $0c86 to print error message if someone tries to print outside of screen. You ... to convert screen coordinates (row and column) to screen address. It's done just to ... -
Communal Project for ASM NewbiesHi Folks, I tend to learn best by trying stuff and then going through the pain of it not working so that I can research and fix mistakes. I suspec…
... written my own routines to draw them to screen. Mainly as a ... the row (I can "print" to any pixel row rather than ... yet though.
Screen attributes or graphics - graphics but ...
You're not managing to be condescending. Sensible advice thanks ... -
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…
... one part of the screen and not scroll the ... to either code all the scroll routine yourself using PRINT ... driver that lets you print to it via a BASIC ...
You might want to play with the +3E roms ...
You can save variables to files so it depends how ... -
Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... would need an interpreter routine to parse the correct board ... skipping positions would mean having to again calculate the intervening ... is done direct to the screen, so needs to calculate next line ... .
If we print to a buffer then copy, though ... -
im looking for a horizontal scroll routinehi, im looking for a horizontal scroll routine. i read somewhere that you can do it with at 'to' statement, somewhere in a print routine. althoug…
... green needs extending either side to tidy it up.
The ... the tunnel scrolls from right to left in 1-char steps ... , then it's only necessary to update the three colum numbers ... data to get the PRINT to scroll it. The data for one screen needs ... -
The point of IX+1 IX+2 ?the numbers that you can add-on to IX and IY seem hardcoded, so I dont see the use of that feature? any examples of the use of IX and IY plus number…
... easy to switch where you wish to print on screen, divided in to several windows ... -
The point of IX+1 IX+2 ?the numbers that you can add-on to IX and IY seem hardcoded, so I dont see the use of that feature? any examples of the use of IX and IY plus number…
... is easy to switch where you wish to print on screen, divided in to several ... -
z88dk terminalsto set up a terminal a bunch of numbers are needed: m4_zx_01_output_fzx(_window_1, 0x2330, 0, 0, 1, 14, 1, 19, 0, _ff_ao_Prefect, 14, 0, 14, 8, 1…
... foreground mask (set bits = keep screen bits) ##
dnl## $13 ... you will be able to print to this driver using high ... is moved to 0,0 when the screen is ... bit 13 = 1 to cause the screen to clear when it is ... the existing screen colour. You can, eg, print in ... -
Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... that it is possible to have 2 non working ... possible . So I decided to try a third membrane as ... numbers 5 and 6 to print on screen from it with the ... membrane it came with. This seem to ... and I have to decide whether to keep it as ... -
Speeding up PRINT code in ROMHi Folks, I seem to recall that someone stated the PRINT command is rather slow because it has to handle screen and printer printing - is this cor…
... Row to print to
cp 0x08 ; Check if in first screen region ... DISPLAY+0x0800 ; HL points to second screen region
cp 0x10 ... DISPLAY+0x1000 ; HL points to third screen region
to print position
... -
Print vs 23659To be honest I could not think of a better topic title, although its not ideal. Anyway, I do recall reading ages ago that the reason you cannot no…
... if you simply want to print to the lower screen, it’s much ... easier, faster, [i]and[/i] safer to ... use [b]PRINT #1; AT 0, ... is because it tries to print an error message in ... the lower part of the screen, where the messages appear ... -
Print vs 23659To be honest I could not think of a better topic title, although its not ideal. Anyway, I do recall reading ages ago that the reason you cannot no…
... 'm aware of using #1 to print to the lower lines, its a ... away with "its the lower screen so you cannot use 22 ... as its "out of screen" thing but you could with ... -
why cant i do this in a dimensional array?let m$(20)=m$(20)+"hello" it wont add it to the string/array m$(20)
... char so when you get to a CHR$ 16 there ... .
Try PRINT CHR$ 16 to duplicate the error message ... t$ = "": FOR r=yd TO yd+yw-1: LET t ... $(r,xd TO (xd+xw-1)): NEXT r: PRINT AT yd ... numerical array and POKE directly to screen memory.
Regards ... -
I introduce myself and my emulator.Hi! My name is Marta, and I've been a Speccy user for 30+ years now. During the past year I decided to write my own emulator, just to see if I cou…
... "fix" produces artifacts just next to the right border when loading ... ... :(
I'll have to put my thinking cap on ... 4 Lines" demo doesn't print the screen, so that's a ... -
I introduce myself and my emulator.Hi! My name is Marta, and I've been a Speccy user for 30+ years now. During the past year I decided to write my own emulator, just to see if I cou…
... produces artifacts just next to the right border when ... aberration, which I attributed to tiredness, age, and some ... no-one cared will have to do.
... " demo doesn't print the screen, so that's ... Something else for your to ponder over (provided you ... -
Loading Images/Screens mid-gameHi all, Looking to get back into a bit of coding and I couldn't figure out a way to do the following: I have an image/SCREEN that I'd like to b…
... copy pixel row from a$() to screen
99 NEXT r:
REM initialise FN s$() to hold screen data
1991 GO ... $: REM copy pixel row from screen to a$()
2016 NEXT r ... -
Fast Binary to Text DisplayI've done this thing that takes some memory contents and converts it to a Binary version of 0's and 1's on screen. However, I've no idea what to use …
... CPL'd Binary text
;to screen.
;
;48 bytes ... next bit
jr nc,print ;
add a,06h ; ... make '0' character
print:
ld (de),a ;< ... way of making it print the correct version of ... -
New Utility to Transfer Z80 Snapshot to +3 DiskSince getting a Gotek for my +3 it has been my go to machine. The biggest downside however is the lack of older games on disk format with pretty much…
... loading screen
-m dump banks and compression to binary ... right of screen pixel area
-b3 @ space in Print Buffer ( ... however, there are some exceptions. To help with these, and make ... just so happens to be the loading screen. Some however don ... -
Strongest aspect of Spectrum BASICWhat would you say is the strongest aspect of Spectrum BASIC compared to other BASICs on other micros at the time. I think it might have been the Fun…
... was that it allows PRINT # to send output to the screen or the printer ... sets of output code for screen and printer*, or three for ... screen / printer / file.
* OPTION ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... at 32768 and draws direct to screen instead of a back ... #A000 if you want to draw directly to the screen
; (not ... that), but drawing to the screen is easiest thing to do
; ... output:
SjASMPlus Z80 Cross-Assembler v1.18.2 (https://github ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... want to split the input buffer up into tokens and print each ... br /> ld (de), a ; draw to screen
inc d ; move down ... />
; erase last char written to screen
unputc:
ld hl ... /> ld (hl), a ; draw to screen
inc h ; move down ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... br /> ; base address of the screen
SCRBUF_BASEADDR EQU #4000
to screen
inc d ; move down ...
; erase last char written to screen
unputc:
ld hl ... ld (hl), a ; draw to screen
inc h ; move down ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... br /> ; base address of the screen
SCRBUF_BASEADDR EQU #4000
to screen
inc d ; move down ...
; erase last char written to screen
unputc:
ld hl ... ld (hl), a ; draw to screen
inc h ; move down ...
