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ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... of a DOSbox, much to quick to READ and closing directly, ... is compiled by default to run at address 32768 so you ... page. Instead follow the link to their [URL="http://sourceforge. ... to customize SP1 to non-default values (such as selecting smaller screen area to ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... t want the scroll to flicker on screen. When the 50Hz ... so that all drawing to screen can be done flicker- ... times it is completely on screen
{
g_scrollShift = 15; ... from a source address to a destination address whilst performing an ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... call function "f" to modify the address to move down one pixel ... width printer to be able to print to the screen AND to a block ... double width printer only prints to screen. There is no problem ... gets applied directly to screen rather than doing it to a buffer ... -
Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …
... incremental method of calculating the SCREEN$ address ordered by columns, and it ... overlap the compressed data) to decompress the SCREEN$ and after depacking, reorder ... a cross-compressor of SCREEN$ and data, to minimize the storage requirements ... -
Vector drawing routines.Anybody could point me to some sort of vector drawing package of routines, callable from BASIC? With "vector drawing" I mean to draw 2D pictures with…
... I decide to use splib2 to create my image parser to draw lines ... pattern filler code and related screen address manipulators. The buffers that splib2 ... the default address is 32768 which you can change to whatever makes ... -
Vector drawing routines.Anybody could point me to some sort of vector drawing package of routines, callable from BASIC? With "vector drawing" I mean to draw 2D pictures with…
... /> .up
push hl ; save screen address
call SPPixelUp ; move up ... pixel coordinates to a mask + display address), "SPPixelUp" (modify display address to move up ... -
Your help needed![FONT=Arial]there are [URL="http://www.worldofspectrum.org/neededscreens.html"]a number of titles[/URL] (146) that still lack an in-game scre…
... that software should allow this screen to be grabbed.
to print anything to the screen. (Nothing to grab). So technically ... it to work. There's something wrong somewhere, because the LOAD address ... -
splib2 from ROMI'm trying to generate IF2 ROM games for ZX Spectrum 16K using z88dk + splib2. So far I've managed to create a new crt0 file and to generate valid RO…
... in each character on the screen.
SPDirtyChars is ... on screen need to be redrawn.
SPTileArray stores the address ... .
... going to have to do some work today will ... covers the entire screen (or area of the screen that splib2 ... -
splib2 from ROMI'm trying to generate IF2 ROM games for ZX Spectrum 16K using z88dk + splib2. So far I've managed to create a new crt0 file and to generate valid RO…
... of which characters on screen need to be drawn, SPDisplayList is ... occupying each character on screen, SPTileArray is an array ... ; actually 4*number of screen rows
SPDisplayList ds. ... place at a specific RAM address. This way we can ... -
splib2 from ROMI'm trying to generate IF2 ROM games for ZX Spectrum 16K using z88dk + splib2. So far I've managed to create a new crt0 file and to generate valid RO…
... SPDisplayList array so that the screen is initially filled with the ... SPDirtyChars array so that the screen is completely redrawn in the ... at $3000 put the UDG address to use for character 0, at ... +48*2 put the UDG address to use for the character '0 ... -
another c64 vs. Speccy site...[url]http://c64vsspectrum.com/[/url] 25 years and we are still brawling.. ;)
... the same screen size screen (or even rejuggle the screen RAM to match the ... *) but there wasn't an attribute RAM to colour that in; instead ... values with that of the screen. Another case of if ... 's easier to rejuggle the code to use the screen directly since ... -
another c64 vs. Speccy site...[url]http://c64vsspectrum.com/[/url] 25 years and we are still brawling.. ;)
... would make more sense to use 200 bytes for ... TMR;236134]i try not to, it gives me headaches ... and vertical movement of current screen address (again, for [B]both ... on Spectrum you need to write clumsy and rather slow ... was possible for Spectrum to be a much better ... -
help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…
... at a time, not the screen address one double byte at a ... 'ex(sp), hl'-type instructions to get the saved bytes back ... the right order on the screen starting one pixel line higher ... -
help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…
... the z80 has to share access to it with the ... a time, not the screen address one double byte at ... br /> ld sp,0 ; to be filled in by self ... loop needs more unrolling to improve this and ... No adjustment to the destination address needs to be done for ... -
Dangerous Z80 Assembly CommandHave been reading Toni Bakers' "Mastering MC On Ya Speccy" book and came across the list of Z80 commands in the dictionary section. Page 102 "[b]IM…
... files load in at around address 49000 or so.
... myself (like manipulating the screen), returns to BASIC correctly whilst still ... counter to somehow end up at some wild address, and the screen typically ... to print the result of the USR command on the screen ... -
Disappearing/appearing effectI remember doing a small routine in BASIC which could be used to cover the attributes section randomly, until all 704 characters were filled with the…
... would the bits need to be to do a pixel version ... your internal state would have to be at least 15 bits ... , which can be used to determine all the maximal length ... galLFSR16(1); // set initial state to 1
do
Ripping a fontIs it possible to rip a font from a machine code game using Spin?
... /> copy of it on screen. If it gets it wrong ... of the screen and you'll be able to
... screen, fear not. It's
time to go over to ... " lower down
the screen (although some games omit the ... your own programs, choose an address to store the
set ...Flood Fill ConundrumI have written a flood fill alogirithm. It uses the stack, but only with the y axis. It works quite well, but on large polygons it does take a while …
... (minus the initial x,y to screen address calculation).
It ... breadth-first filler as opposed to a depth-first recursive ... uses much less stack space to accomplish the same thing. ... about 900 bytes to fill an arbitrary region on screen. The black ...Interview for a passport!!!.....Hi all me again! Applied for a passport about a month ago, had a letter come through saying that I gotta go for an "interview".... What the hell is…
... chairs
A big lcd screen is in front of you ... !)
6.Countersigned person's address? (I Knew that!)
7 ... with postcode, and my previous address with postcode
And ... for her full name and address to 'establish identity' and ensure she ...'orange' on a spectrumalways wondered why spectrums could never seem to achieve the colour orange? wasn't one of the default colours, and don't remember seeing anything th…
... commands can only write to the main screen at 16384.
screen to it, then page Bank 7 ... that you can LOAD SCREEN$ + a 2nd attribute buffer and load both ... .
(Just need to find a decent SCREEN$ to work from.)
'orange' on a spectrumalways wondered why spectrums could never seem to achieve the colour orange? wasn't one of the default colours, and don't remember seeing anything th…
... 294061]Yes, the 2nd screen (Screen 1) is in Bank ... and draw (copy) a screen to it, then page Bank 7 ... still keep the 2nd screen rendering to your TV. Thus, ... the Z80's address space for it to be selected as ... 49152 initially in order to load the screen in. But once ...Any BBC aware Specchums out there?After the UK101 and VIC20 emulators I've moved my sights onto emulating a BBC computer. This emulator will be different though in that it will be a Z…
... stack space to do a blank screen (vs the ... address to move up one pixel position), SPPixelDown (modify display address to ... move down one pixel position), SPCharLeft (modify display address to ... SPCharRight (modify display address to move right one ...VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…
... Jimmy is recalculating the real address to stored addresses.
Simon ... just uses the real address as stored addresses which ... br /> 1) Complete screen redraw by switching graphicmode
3) option to select keyboardreading frequency
...Bresenham's line algorithmHelp - I really am struggling to get my head around this algorithm. I don't know why, I coped with Cordic (SIN/COS) and integer divide routines (/10 …
... , it is written to be portable to suit various screen resolutions and calls ... a plot function to plot ... line pattern stored in the screen address set to draw patterned lines. If ...Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
... possible by pointing the stack to the screen RAM and pushing the ... push the return address on there and corrupt the screen in the ... bytes of return address to stack. Because stack is on screen, it's ... by POP then write it to screen buffer) you have slightly more ...BASin r14c - maintenance releaseAfter the recent discussions, BASin has been released as version 14c. It's only a maintenance release, and some of the really big new features are un…
... and IMport Binary Object screen with objects to be imported. There ... which allows me to chnage which option to export. If I ... below Add the following code to the current program? and ... your data to memory.
Address - the address to POKE to in the ...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…
... I already know the correct screen address of the top left byte ... in the quickest way want to, for example, write 255 into ... knew the red address loaded into HL, how to access the other ... this 16x16 part of the screen?)
[CODE]
[COLOR ...ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …
... as a screen then type RANDOMIZE USR and whatever the address is ... Speccy file formats, there seems to be hundreds of them ! I ... is screenshot which contains call/address to the .tap file.
The ...A scrolling starfield - help needed!I have been messing on my speccy again recently and tried to do a scrolling (parallax - maybe) starfield. I know how to scroll using machine code but…
... to change the code which calculates the destination screen address ... ; calculate the destination address
; the y ... /> ;hl now points to required screen byte
PUSH ... /> POP HL ; retrieve pointer screen byte
...Assembler snippetsI was just thinking that a thread for small but useful assembler snippets to do useful things would be cool for people learning z80 coding. Not to me…
... is fantastic. Was thinking how to do just that two nights ... a classic:
Move a screen address in HL down/up one ... pixel on the screen (I usually have it as ...
