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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 ... -
yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... cores: booting, keyboard, output to screen, cursor handling, scrolling, timer, ... handler just has to transfer control to an external hook ...
;; ------------------------------------------------------------
;; scan code to zx-ascii code mappings
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...New game! Nanako in CJMC for ZX81!Yup, that's true. We've been busy in crafting a nice, small, simple library to code games in text mode (this is, standard, unexpanded) for the 16K ZX…
... a newbie when it comes to the ZX81, but, ... (simple hardware hack) to use WRX to do hires. If there ... needs that the data to be output to screen lies below $4000. ... That's why you need to ... 256 bit combinations in ROM to use them, that's ...New game! Nanako in CJMC for ZX81!Yup, that's true. We've been busy in crafting a nice, small, simple library to code games in text mode (this is, standard, unexpanded) for the 16K ZX…
... a newbie when it comes to the ZX81, but, ... (simple hardware hack) to use WRX to do hires. If there ... needs that the data to be output to screen lies below $4000. ... That's why you need to ... 256 bit combinations in ROM to use them, that's ...New game! Nanako in CJMC for ZX81!Yup, that's true. We've been busy in crafting a nice, small, simple library to code games in text mode (this is, standard, unexpanded) for the 16K ZX…
... (simple hardware hack) to use WRX to do hires. If ... needs that the data to be output to screen lies below $4000. ... That's why you need to ... bit combinations in ROM to use them, that's ... can configure the RAM to load at any address. ...Print TextHow do i print text on the bottom left row(memory location in attribute 23295) of the screen in assembly? I understand the parts better on paper and …
... and start print position on screen
pmess_loop2 ld ... br /> ;restore screen pointer and set loop to 8
... ;transfer 8 bytes from ROM to screen
pop de
... pointer and screen pointer - increment to next character and screen position
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…
... when drawing directly to the screen. one idea is to have shadow video ... calculated when it is blitted to the screen and drawing routines can ... bitmap follow each other sequentially) to screen using clipping? except for clipping ...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…
... video code can write directly to screen rather than through the API ... environment can redraw on screen what needs to be redrawn. With rectangular ... cell before copying the result to screen. The fixed address of the ...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…
... themselves in Z-order directly to screen and that will cause a ... now - you could force them to respect complex clipping regions (composed ... of both): paint everything to back buffer then copy entire ... (merge of all affected windows) to screen. it'll take some time ...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…
... themselves in Z-order directly to screen and that will cause a ... (merge of all affected windows) to screen. it'll take some time ... up to the windows which parts of them they redraw on screen ... is very easy to maintain, and to redraw your screen you just iterate ...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…
... his call to draw_line and draw_text to partial calls to draw to cells. ... main screen has to be redrawn and the screen buffer says it belongs to screen ... draw character 7,7 from screen 3's own buffer. ... Leaving two screen char lines for menu bars ...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…
... draw on the screen;
b) switching to another task automatically ... backbuffer and then blit it to screen; and you can use it ... why most of people trying to invent something complex with alot ... be made modal and save screen contents they occupied -- nothing ...Atic AtacI tried to use the solution from the Tips Section on here but I only got as far as Down left, pick up green key left, left, left, left, up, up when I…
... to aim for is to get above the room with the six yellow ... and drop into it to get the yellow key. You should ... level, then use the yellow key to go up the main ... , you don't need the yellow key anymore.
to navigate through the barrel ...Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... I][/B]pixel is set to screen location 23248. A loop ... the paddle uses the screen edges as boundaries and ... is at left edge of screen+3[/CODE]
screen then change the values ... full screen) - though you can change cp 0 to xor ...Help Wanted: Playtest BUGFIXED games!There's an ongoing effort at WoS to fix classic Spectrum games with serious bugs that make them impossible to complete, crash frequently, etc. More d…
... (i.e. I go from screen to screen) and once I got up ... -visited an old screen. Then once I was up to 7:48 ... off???)
The last screen ought to be 6:48 ... ok, and ... (paying attention to timer as I walked into EACH screen) when I ...ZX Yourself?Try this... [url]http://c64.superdefault.com/[/url] Can somebody with a decent grip on Java do something similar for the Speccy?
... now.
There used to be an experimental zxcam app ... /> I'll stick to bmp2scr and Basin's screen editor for now ... I'd written a webcam-to-screen$ app before now...
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... the README). You'll have to write a separate test program ... to use it, but it'll ... , PC is highly unlikely to ever point to screen memory. You're not ...
