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Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
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; Prints characters directly to screen bypassing ROM calls
; WARNINGS ... of screen
;
; On entry, A=character to print< ... ; Store in screen
INC HL ; Step to next character line ... H,A ; Step to next 1/3 of screen
SAVEP ... -
BMP2SCR delta formatdoes anyone know where I can find a file specification for LCD's delta compression format used in BMP2SCR? I've tried looking at the bmp2scr source …
... bytes that will my copied to the screen using LDIR. Then again ... : Next two bytes are copied to screen.
Amiga Delta works ... way as rectangles are blitted to screen, not the bytes.
to BC. -
BMP2SCR delta formatdoes anyone know where I can find a file specification for LCD's delta compression format used in BMP2SCR? I've tried looking at the bmp2scr source …
... bytes that will my copied to the screen using LDIR. Then again ... : Next two bytes are copied to screen.
Amiga Delta works ... way as rectangles are blitted to screen, not the bytes.
< ... it's initialising the attributes to all black.
... -
Stopping the loading messages...Hi Folks, As you know, the ZX BASIC kindly reports the program, bytes or data that you have loaded on the screen. To stop these appearing I was thi…
... week searching for a way to hide the BASIC print message ... find a way to stop the message being printed to screen at all ... that I had a poke to remove the message?
to hide the message :D -
BMP2SCR delta formatdoes anyone know where I can find a file specification for LCD's delta compression format used in BMP2SCR? I've tried looking at the bmp2scr source …
... it was not possible to use real Windows gadget. ... on screen, and INC source data by two to get to next ... INC the pointer of screen adress by the value ... 2, Copy the bytes to screen, the pointers of source ... are automaticaly INC'ed to correct position by LDIR ... -
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…
...
; Very simple clear screen routine to set PAPER 0 / INK 7 ... /> ld d,0 ; Value to write to screen
scr ld ... d ; Write 0 to screen
inc hl ; Next screen location
< ... ld (hl),a ; Store back to screen
inc l ; Only need ... -
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…
...
; Very simple clear screen routine to set PAPER 0 / INK 7 ... /> ld d,0 ; Value to write to screen
scr ld ... d ; Write 0 to screen
inc hl ; Next screen location
< ... ld (hl),a ; Store back to screen
inc l ; Only need ... -
Donkey Kong and Pac ManWhat are the best versions of Donkey Kong and Pac Man on the speccy?
... there is a second screen that noone has ever ... to screen 2 and finished it, it just looped back to screen ... 1 but I think there's meant to ... there...? I could try to submit my first .rzx ... too painful for anyone to watch. Actually the thought ... -
The Phone BoookGot our new telephone "directory" today. It's smaller than ever before. Remember when the telephone directory used to be the same size as the yellow …
... the phone line up to a server to screen your calls by a ... -
HARRY THE MAGICAL - The Herrow HallowsHi, i just upload the new episode of HARRY THE MAGICAL - the Hero Hallows, now with the great ingames Mahjong and Video Poker, i love this great game…
oh, nice addition to new speccy games...
... ) with no apparent way back to castle... and still don-t ... that teleports you anywhere from screen to screen? -
Moving screen while BEEPER's playing?Hi. For some time I think about it. First time I saw it on YouTube, on ZX Spectrum Orchestra video. Effects are of course rather simple but still…
... because when you start writing to screen memory, that affects the timing ... that, you'd have to synchronise with the screen refresh. Either way ... make sound effects whilst copying to the screen, but only noises - I ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... br />
Specifically, screen RAM - which is contended ... help (the transfer to screen speed is partly determined ... paint the whole screen during the border time ... goal was to be able to get data ... has conditional instructions to avoid pipeline flushes when ... -
Double Dragon 128k - The graphicsAs you are all probably aware, I tried gathering a team of people together a few years back to make a totally re-programmed version of Double Dragon …
... ZX Paintbrush or Basin's screen editor. But I wouldn't ... PC side and then converted to screen$ before going through the final ... -
New game coming soon: PhaetonI have thought that I'll announce it now to build some anticipation ;) I'm almost ready with my new Spectrum game called [B]Phaeton[/B]. It is a g…
... , it displays -1 live compared to what the player actually has ... apparent on the "lives left" screen. I also think its a ... little harsh to send the player back to screen one, even when ... and still find it difficult to complete, now, where's that ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... would [B]you[/B] consider to be the things that are ... ?[/QUOTE]
Adequate CPU-Speed-to-Screen-Size ratio with everything being ... -
Contention: LDI vs LD (ss), rAccording c.s.s. FAQ: instruction LD (ss),r breakdowns as pc:4,[b]ss:3[/b] and LDI as pc:4,pc+1:4,hl:3,[b]de:3,de:1 x 2[/b] can anyone explain why …
... many bytes it can copy to screen between T=14336 (end of ... simulates copy from back buffer to screen.
LDI routine ... -
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…
... you need to LDI ONE-PIXEL ROW onto the screen (out ... Your proposed screen organization to splot a 16x16 area on screen:
< ... of 16x16 areas just blitted to screen, things are close enough ... frame... for the current screen organization we are predicting 70000 ... -
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…
... of addresses for a screen memory plus an attribute ... effect is that the screen-range is divided in ... level in MC routines for screen handling.
The ... hardware is that two bytes (screen + attr) must be ... for every pattern moved to screen. This is demanded by ... -
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…
... -level in MC routines for screen handling.[/QUOTE]
Sounds ... time for every pattern moved to screen. This is demanded by ... Spectrum screen layout is in fact very loosely related to hardware needs ... choose any width for your screen (in columns)
... -
Need help with a DOS commandI've searched for hours in a row and I've been searching for a couple days now, but I can't find a way to log on to a local machine using DOS. This i…
... have you tried booting up to a command line with ... it launches when it goes to screen saver while displaying the welcome ... screen.
[QUOTE=ADJB;517729 ... quoted does bypass the welcome screen. I use it bypass idiots ... -
Need help with a DOS commandI've searched for hours in a row and I've been searching for a couple days now, but I can't find a way to log on to a local machine using DOS. This i…
... only reason I was able to launch cmd.exe was because ... it launches when it goes to screen saver while displaying the welcome ... screen.[/QUOTE]
I mean ... -
Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
... way using POP/PUSH is to use all the registers, giving ... SP. I guess the instruction to make the above work would ... it existed. You'd have to have 2 stacks.
to the screen with HL pointing to screen, and LD (HL ... -
Rendering techniques in emulatorsI've been giving thought to the possibility of speeding up the rendering in Zero considering I've been putting it off long enough. My approach is c…
... br />
[quote]
Spud screen display now runs nearly as ... .
Spud draws to the buffer on every write_byte ... t_state the buffer was written to up to the current t_state, this ... One that maps t-states to screen addresses, one more that maps ... -
50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... then PUSHed into screen memory in sequence, according to which I ... ' and IX, and to PUSH them to screen memory takes longer, so ... things slow down. Thanks to ... the contended way the screen memory works, ... -
Load! Screen$ questionI've got a basic program listing in BASIN which among other things recalls a screen via Load! (I've Save!'ed a screen into memory before hand). How d…
... save the screen(s) in memory to one file ... no need to bundle your program and screen together ... t want the screen to be displayed to the user ... loading it to screen and saving it to ramdisk from ... /> ...
1000 LOAD !"myscreen" SCREEN$
[/code]
Games You Still Hate to This Day Like...Dream Warrior... I can't even understant what's the dam point of the game... and why did they have to chose those horrible colours???
... ;526785]You have to be actually able to play a game before ... in a juddery fashion from screen to screen and corrupt a few .PTBL ...Small Machine Code Routines Which Maybe UsefulAs part of creating Flynn's Adventure in Bombland I created a lot of little routines to do all sorts of things. A lot of these I created based on inp…
... - plot double sized character on screen
; input - h- ...
; **********************************
; xy coords to screen pixel position
; **********************************
ld ... and %11100000 ; 7t - convert to screen address
add a,l ...Best way to organise a multi screen game?Hi All, Does anybody know ay good ways to organise large multi screen game? Or any links to useful texts on the matter? In my previous single scr…
... to the screen data, one pointer per screen. You can get pointer to needed screen ... direction, otherwise you get pointer to screen data from the table and ... how to build screen, and list of objects on the screen. The screen itself ...anyone else getting ODD silent calls?just had a call.. silent one.. but when you do 1471 you normally get a withheld number , normally ambulance chasing basts or holiday scams etc. th…
... crazy Texans off you have to screen them to make sure they're ... not coming to put a slug in yo ...anyone else getting ODD silent calls?just had a call.. silent one.. but when you do 1471 you normally get a withheld number , normally ambulance chasing basts or holiday scams etc. th…
... crazy Texans off you have to screen them to make sure they're ... not coming to put a slug in yo ... , the party you are trying to reach is not available...
