-
Robospec (new project, hopefully useful as a tutorial as well)Starting a new project after my graphics investigations. * It's gonna be a Robotron clone since that's not too ambitious (although I'd like to hav…
... hl
; look up screen address from the table
... br /> ; next row, calculate screen address
pop hl
... hl
; look up screen address from the table
... br /> ; next row, calculate screen address
pop hl
... -
Robospec (new project, hopefully useful as a tutorial as well)Starting a new project after my graphics investigations. * It's gonna be a Robotron clone since that's not too ambitious (although I'd like to hav…
... back
; look up screen address from the table
ld ... back
; look up screen address from the table
ld ... back
; look up screen address from the table
ld ... back
; look up screen address from the table
ld ... -
Robospec (new project, hopefully useful as a tutorial as well)Starting a new project after my graphics investigations. * It's gonna be a Robotron clone since that's not too ambitious (although I'd like to hav…
... /> [code]
ALIGN 256
; screen address table. This must be 256 ... -
Robospec (new project, hopefully useful as a tutorial as well)Starting a new project after my graphics investigations. * It's gonna be a Robotron clone since that's not too ambitious (although I'd like to hav…
... hl
; look up screen address from the table
... hl
; look up screen address from the table
... br /> ; next row, calculate screen address
pop hl
... br /> ; next row, calculate screen address
pop hl
... -
Robospec (new project, hopefully useful as a tutorial as well)Starting a new project after my graphics investigations. * It's gonna be a Robotron clone since that's not too ambitious (although I'd like to hav…
... back
; look up screen address from the table
ld ... back
; look up screen address from the table
ld ... back
; look up screen address from the table
ld ... back
; look up screen address from the table
ld ... -
Robospec (new project, hopefully useful as a tutorial as well)Starting a new project after my graphics investigations. * It's gonna be a Robotron clone since that's not too ambitious (although I'd like to hav…
... /> [code]
ALIGN 256
; screen address table. This must be 256 ... -
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…
... day did not clear the screen, make the attributes ink and ... to and executed from the screen address space hmm? -
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…
... day did not clear the screen, make the attributes ink and ... to and executed from the screen address space hmm?[/quote]
How to get Grahics to wrap vertically around the screen?I am using the following code to draw an image to the screen. First I use HL to contain ROW and COLUM I then call the MapScreenFunction As I draw m…
... draw an image to the screen.
First I use ... to 0, thus giving vertical wrap, any ideas how to do ... across
; exit HL = display address
MapScreenAddress:
push de ...Anyone know the address mappings...of the hardware resources on the speccy; From the screen display address range to all the hardware control registers. etc. Where can I get access t…
of the hardware resources on the speccy;
From the screen display address range to all the hardware control registers. etc.
Where can I get access to this information?
Many thanks,BASin Release 11 out nowBASin has been updated once again, for your BASIC programming pleasure! Get it at: [url="http://homepage.ntlworld.com/paul.dunn4/BASin_r11.exe"]htt…
... (.bas), CODE files (.bsc) and SCREEN$ files (.scr).
Added ... strings which need to wrap around the screen. A green bar will ... />
Feedback to the usual address - and happy coding to you ...128k Shadow Screen?When emulating the shadow screen in bank 7 should that bank be switched into address C000? If so, what happens if bank 7 is switched out without canc…
When emulating the shadow screen in bank 7 should that bank be switched into address C000? If so, what happens if bank 7 is switched out without cancelling the shadow?screen$I'm wanting to create a game which is written mostly is Basic, due to lack of MC skills but i need a MC routine if someone would kindly supply it I…
... /> eg screen 1 at address 23296 to 30208
screen 2 at address 30209 ... this data from it's address to 16384
i ... used to mess up the screen if you were pressing a ...128k Screen Flipping - Sample Code PleaseI know this has been covered before, but I cannot find out code to do the following: On a 128k Spectrum tell the speccy to display from address 4915…
... the speccy to display from address 49152, switch back to 16384 ... that I can display one screen, draw to the other and ...Screen LoaderCouple days ago i find very interesting loader routine in ex Yugoslavia magazine "Svet Kompjutera" from january 1987. Authors of article, calls this …
... "bit-loader" and she load screen verticaly line by line, from ... of most impressive.
Uncompressed screen must be at 49152, routine ... solution of problem.
Start address of game is in IX ...Spectrum Screen Memory MapWhat's the advantage (mistery?) behind ULA's spectrum screen memory interpretation? 6144 bytes divided into 3 blocks, 2048 bytes long. if you want t…
... (mistery?) behind ULA's spectrum screen memory interpretation?
... to draw something on screen you have to poke ... bytes to your initial poke address according to byte's ... behind this implementation? Why screen memory isn't interpreted continuously ...ANNOUNCE: BASin r14 is up. New SCREEN$ paintbox included.Hi all, Well, I can't sit on this any longer - so I've released it. Let's all get a good testing session going, eh? You can get the new BASin [url=…
... /> The big news is the SCREEN$ paintbox. It's now in ... . (Daren Pearcy)
Added - The SCREEN$ paintbox tool. It's basically ... of memory (specified by an address and size in bytes) and ...Screen access in assemblerI am again troubled by the unusal screen design of the Spectrum. :) If I want to do something with, say, a 16x16 bit block of the screen (in the sam…
... again troubled by the unusal screen design of the Spectrum. :)
screen (in the same 1/3 ... I have the correct start address in the display file loaded ...Hacking the O.C.P Full Screen Editor/AssemblerIf you have been reading my posts recently then you will know that I am eager to have the sourcecode I wrote for the Spectrum during the period 1988 …
... The O.C.P Full Screen Editor/Assembler was published ... the object code to the screen (location 16384) so ... just assembled to a screen dump of 6912 BYTES. ... me to use actual address within an hex editor, ... directly after the program at address 089F0h. The very last ...Loading a screen in to memory...Hi Folks, I want to load a SCREEN$ in to memory and save it out to RAM disk without it being displayed on the screen. I am worried about over writi…
... being displayed on the screen. I am worried ...
[CODE]100 LOAD “SCREEN” CODE RAMTOP+1,6192
110 SAVE !”SCREEN” CODE RAMTOP+1,6192 ... /> Where RAMTOP is the address held in the equivalent System ... a simple [B]LOAD!"SCREEN" SCREEN$[/B] or does the ...Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... way of calculating the memory address of a pixel? So for ... wanted to "plot" pixel at screen coordinates 50,50 how would ...(part of) screen to UDGHere is a routine to copy a Y,X-position on screen to a UDG. 0<=y<=23 0<=x<=31 144<=udg<=165 (UDG "A" to UDG "U") [code] ; start code with ; PRINT …
Here is a routine to copy a Y,X-position on screen to a UDG.
0Fastest redraw of screen from UDGsHere's a question for everyone, to generate a bit of code to be used in games: On a standard 48K Spectrum, what's the fastest way to redraw the scre…
... with a character-mapped screen and render that as ... drawn, to try to minimise screen tearing.
... a full 16-bit address of each UDG, allowing ... larger than the rendered screen and/or wraps-round ... the translation from map to screen.
And ...display file addressing; screen slicingWhile working on this Compendium I'm updating or rewriting a lot of stuff. One thing I eventually came to appreciate was the simple & clever way in w…
... the screen once the structure of the display file address is ... automatically calculate the correct address for the next row ... automatically calculate the correct address for the corresponding row ... = 0
STARTING ADDRESS:
H = 64 + segment*8 ...SCREEN$ bug fixI've been using the SCREEN$() function recently for reading data off the screen rather than taking up space with an array and I got fed up with the s…
I've been using the SCREEN$() function recently for reading data ... off the screen rather than taking up space ... fix for it. Instead of SCREEN$(row,col) use FN c ... $
bit 0,c ;DE=address, BC=length (0 or 1 ...Scrolling Bi-Colour Engine for 4-Player GamesJust putting this code up for people to have a look at. Far from finished. Should simply compile and run a bit of a demo. Only good for 128K and +…
... loop for speed.
;Use wrap-around attribute map to allow ... hl,de ;hl = address of attr on screen
ld a,(print_attr_cache ... de,hl ;de = address of char on screen
pop hl ; ... retrieve data address
jp ...misunderstanding screen addressingHi I am just reading mastering machine code Toni Baker: [url]ftp://ftp.worldofspectrum.org/pub/sinclair/books/MasteringMachineCodeOnYourZXSpectrum…
... address of the “print position”
for any point of the screen ... two digits of the address of this print position ... This gives us the address 40A4.
Try ... appeared on
the screen is, in fact, ... 4. This gives us the address 40A4.[/QUOTE]
byte to screen eventI have another question regarding assembly routine in MMCOYZXS by Toni Baker page's 87-88 [QUOTE]21A440 LD HL,40A4 11083F LD DE,3F08 0608 LD B,08…
... @ 0x3Fxx are written to the screen location 0x4xA4 is not when ... 'HL' registers that indirectly address the screen location are passed the 'A ...Column and row numbers to attr address?[FONT=Calibri][SIZE=3]Can anyone provide me with a code snippet the will convert the column and row numbers into the screen attribute address. For ex…
... and row numbers into the screen attribute address. For example, if de ...Spectrum screen layoutSeeing the thread on displacement I was wondering why the spectrum had the stupid screen split into three sections and the addresses for each section…
... the spectrum had the stupid screen split into three sections and ... why didn't they just address the screen from top to bottom.
