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Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... the start of the next line, like you would get ... LDIs in your unrolled line copy routine as padding. ... with LDIs again, ready for next time.
... move to the next line. The next screen line address (in DE ... the address of the next entry (including a wrap ... -
Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... everything on a character basis, line by line (as in, 8 pixel ... ).
1. Fill a line of new attributes (actual attributes ... new pixel data for that line, on a character basis. If ... . Let's go for the next line (if any are left).
Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
er, just doubling the frequency of the horizontal sync pulses is no good that would just put the second half of the line on the next line down :-oHarlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
Moving a line down the display in assembler?...It's not a "[I]how can I do it[/I]" question, it's more a "am I missing something in trying to do it a new way" kinda question. What I've been doing…
GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…
[QUOTE=tstih;630116]1) Linear backbuffer. This means each drawing routine could be much faster since adding 32 would get you to next line and shifting 5 times left to random line.
[/QUOTE]
why people think that linear buffer is faster ?FOR 1 TO 0 - Execute "no times"?I checked a couple of basic variations, and generally a for loop executes at least once, even if you create a negative loop without step -1. But in s…
... will hold the line number of that NEXT statement; otherwise, ... to find the current line, rather than explicitly stating ... a NEXT search, so NEWPPC would then hold the line ... number of the DEF FN not the NEXT.< ... any GO TOs to the NEXT line, as GO TO also ...dungeon crawlerHi. I'm toying with idea of making simple dungeon crawler in spectrum basic and i actually got first version working somehow. [IMG]http://watashi.ic.…
... ,y; to get to the next line.
Or of course ...BIFROST* ENGINE 1.2 released!Another improved version of the BIFROST* ENGINE is now available! Download it here: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0027405[/u…
... loading register values for the next line.
[QUOTE=Gedlion ...64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…
... , to copy up a line in segments and avoid running ... buffer.
One line takes 224T, but if you ... from the start of one line, start filling in behind ... until the end of the next line, that's 224+128 = ... reaches the end of the line. The problem is the ...64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…
... 65535
;the next byte from 65535 is byte ... br /> ;----------------------
;go to next line
LD A,36 ... /> LD HL,(CurrentLineStart) ;next line screen address
ADD ... /> LD HL,(CurrentLineAttrs) ;next buffer data
ADD HL ...64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…
... /> LD (CurrentLineAttrs1),HL ;start of next line
;delay
NOP ...
;----------------------
;go to next line
;delay
LD ... ,32
LD HL,(CurrentLineStart) ;next line screen address
ADD HL ...Mini scroll routineI'm looking for a routine that scrolls a small section of the screen downwards and replaces it with nothing, 2 x 2 charcter blocks to be precise, to …
... DE to next one down
call drawline ;fill one line of ... /> ;
nextlineup ;points hl at next line up in display file. Modified ... /> ;
nextlinedn ;converts de to next line down in DF, modified from ...Using RST 16 and udg flickerHi there! I'm using UDGs and RST 16 to make a simple canyon bomber game. I've got the game mechanics working ( finally ) but now I'd like to make …
... as it moves to the next line down. This is where I ...Games featuring... relevant bugsThere was a recent improvement to the WoS database in order to classify [URL="http://www.worldofspectrum.org/forums/showthread.php?t=34261"]Games fea…
... update, the game goes line by line updating the screen:
1 ? If the line is the first of the ... is any sprite in that line. If there's a ... pointers and go to the next line, until the whole screen ... 2 & 3, that line will show the data corresponding ...Newbie says 'Alreet?'Hiya dudes, Just dropping a line to say hello as i've decided at 33 to try and fulfill a long time ambition to write a speccy game in machine code..…
... and drop through to the next line in the routine. If the ...Newbie says 'Alreet?'Hiya dudes, Just dropping a line to say hello as i've decided at 33 to try and fulfill a long time ambition to write a speccy game in machine code..…
... use these 2 routines for next pixel line up and down. It ... ;returns with DE pointing at next pixel line up in Display File ... /> ;
nextlinedown ;converts de to next line down in Display file, modified ...Video generation using a CPUWe know it is possible to generate a video signal using a CPU, and this technique was often used on low-end computers in the early 1980's (for exampl…
... the start of each display line, an interrupt is generated by ... the first character in that line in the display file + ... internal shift register during the next eight cycles.
... interrupt is generated for the next line of the display.
Getting PC into HLHello, here's a conundrum for you... Is there a way to obtain the value of the PC register (say into HL) without using absolute addressing such as C…
... : READ b: POKE a,b: NEXT a:
PRINT AT s ... -(22 AND s=21):
NEXT s
1002 DATA 233 ... HL = the address of the next line.Getting PC into HLHello, here's a conundrum for you... Is there a way to obtain the value of the PC register (say into HL) without using absolute addressing such as C…
... HL = the address of the next line.[/QUOTE]
But then ...Fastest 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…
... at the end of each line in the frame buffer that ... to the beginning of the line. That would allow it to ... need to insert the next-line jumps for each line at the right ... , add some sprites, insert the next-line commands in the right place ...Fastest 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…
... at the end of each line in the frame buffer that ... to the beginning of the line. That would allow it to ... the initial position at the next character row).
My ... , add some sprites, insert the next-line commands in the right place ...Using FOR/NEXT like 'while'I don't know if this has already been discussed (I did search, but the search engine didn't like the word 'while'), but here's a way of using a FOR/N…
... :
GO SUB FN w(line,while) -or- GO SUB FN ... u(line,until)
with the subroutine ... SUB stack, or else the "next line/statement" system variables.Printing textThis is probably quite a basic question, or there might be something obvious I'm missing. I'm looking for an economical way of printing formatted te…
You might be better off writing your own text printing routine where using a control character moves the text down to the next line without resetting the column number to zero.BIN2BAS (load BASIC text into emulator) utilityI've nearly finished testing this. It allows a BASIC program to be loaded from a text file in any emulator which has a "load binary" option. I was wo…
... be specifically line 1, just the first line of whatever' ... lost" error if the line being executed had moved. Using ... will continue loading from the next line.
--
... Fixed the broken line handling as well.
Font hack that was used in a lot of early gamesThere was a little hack for changing the fonts on a spectrum and I remember it being used in a couple of old games on the 48k, it was a sort of ye od…
... the starting address of the next line, at $1BBF LINE_USE, held in ... start to find that line, using the line lengths to do so ... br />
(The line zero POKE stops the line being edited, rather ... /> Just had a thought ... if line 10 corrects NXTLIN as well ...Font hack that was used in a lot of early gamesThere was a little hack for changing the fonts on a spectrum and I remember it being used in a couple of old games on the 48k, it was a sort of ye od…
... when attempting to find the next line. It will work just fine ... your program contains a single line, which is enough for a ... 23758,255
SAVE "test" LINE 1[/CODE]
