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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 ... behind this implementation? Why screen memory isn't interpreted continuously? ... draw something on screen avoiding 3 block structure? -
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. ... the export function to save a memory dump of the Spectrum ... I know the location in memory.
Stay ... -
Strange DivIDE ScreenI've just got an SD card adaptor for my DivIDE and it does something strange. On startup, I can see the DivIDE logo and it registers the adaptor, bu…
... normally empty areas of the screen are covered in an odd ... font or a red/cyan save-like strobe in the border ... from the bytes in the screen memory. I can load a .TAP ... bit of corruption to the screen.
I actually got ... -
Memory usageBrowsing the online documentation for the Spectrum I came across a peculiar discrepency. As we all know the start of the RAM is at 16384 which is whe…
... which is where the screen memory resides. The screen memory ends at 23296. After ... is what on earth the memory before KSTATE and after the ... video memory is used for on a ... -
Does Screen Flipping work on a 48k Spectrum?On the other post it showed some basic code to flip the screen on a +3. Does it work on a 48k Spectrum. Can anyone show me the machine code to: Se…
... basic code to flip the screen on a +3.
Set the screen memory to default 16384
Write ... backbuffer 49152
Flip the screen memory to 49152
Many ... -
XLR-8 Mastering utils: quick heads-upFirstly, only do this using an emulated 48K rubberkey at this stage because that's all it was ever tested on. "LOADER MAKER" - "First decrypter" - p…
... somewhere the bottom 2/3 screen memory. It's the address ... and let you either save it so you can ... to test (option 1), save the machine code part of ... launches it)
"SCREEN$ DESIGNER" - firstly, load the ... for a keypress then save the whole thing out. -
RealSpec screen$ saves?????Yeah ok, so how do I get RealSpec to save out a screen$ is the scr format? It's a good emulator, no doubt about it, but I just can't find an option …
... I get RealSpec to save out a screen$ is the scr format ... find an option to save screen only. I can save the whole RAM ... or whatever, but not a screen$
And all ... because Martijn loves........... screen pics of stuff loading...... :D ... -
Comments for small "sprite" routine wantedI have just written my first machine code program and I am quite happy (and proud) to get it working! :smile: As a child I never learned anything e…
... in that case save all the counter states into memory locations and ... set, jump to "setcarry" to save it in b
ld (hl),a ;write to screen memory
dec hl ;move back ... ]setcarry[/B] ;small loop to save the carry flag
ld ... -
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…
... your current mouse position in screen memory to the paintbox's ... and also the ability to save it as an animated .gif ... /> Added - "Pixellise" tool to SCREEN$ Editor. This will eventually form ... been moved partially off the "screen". (Badbeard)
Fixed - ... -
Watching screen while debugging???I'll try to state my problem clearly, but I don't know if I'll succeed ..:) I load a Spectrum program into emulator (it doesn't matter which one at …
... single instructions writing data to screen memory. It works this way: ... suddenly,after many instructions,all screen is refreshed.
screen memory [U]at the moment ... emulator, to watch changes to screen immediately?
... -
Erase part of memory in SPIN?A question for SPIN (or perhaps Spectaculator). If I have a game loaded in memory and would like to erase part of the memory while keeping the rest …
... have a game loaded in memory and would like to erase ... part of the memory while keeping the rest of ... would like to erase the screen memory and watch what will happen ... -
Extended memory and SNApshots in emulatorsExist any snapshot fileformat that support extended memory for ZX (clones) ? I see only Z80 fileformat with 48/128 and 256kB(ZS Scorpion 256) support…
... snapshot fileformat that support extended memory for ZX (clones) ? I ... but support only 128kB memory and not contain some other ... Emulator "Z80 STEALTH" support save extra memory in Z80 files (contain ... and save each task to one file with length = zx memory size ... -
Question on copying screen bufferHi, Al my prevoius games were copying graphics directly to screen memory starting at 16384. Now I'm experimenting with screen buffer where I could d…
... were copying graphics directly to screen memory starting at 16384. Now I ... 'm experimenting with screen buffer where I could draw ... I would copy it to screen memory.
You may see ... static image from buffer to screen after HALT.
Am ... -
Screen Viewer: Speccy View 4SpeccyView (v4.0) Here is my new zx spectrum screen viewer, result of this weekend's work. Features: Loads: -Standard Screen Files (6912 byte raw …
... Features:
Loads:
-Standard Screen Files (6912 byte raw .scr ... )
-Sna File (Shows screen buffer of ram image, 48k ... match border colour to the screen,
-Loading and header ... emulator
Hotkeys
Save screen to Scr, Png, Bmp, Jpg ... -
Adding TAP file contents to a Spectrum +3e DOS PartitionHello my fellow WoS'ers, This thread is a companion to a great little guide from a fellow AmiBayer [B]mnjnurney[/B] you can view his thread by [URL…
... exactly the size oft he screen memory of the Spectrum - so ... />
[code]
5 SAVE "ELITE" LINE 10
[/code ... lines with compound statements to save my basic programs, usually ... 9999 CLS : PRINT "SAVING LOADER" : SAVE "ELITE.LDR" LINE 10 : CLS ... -
JSW1 - Game Loader DifferencesThere were four releases (five if you count the PGC bugfix) although with a few exceptions the loaders are about the same. [B]Loader: Pre-Production…
... is loaded at a lower memory point to allow the Speedlock ... upper memory.
This saved the whole lot from screen memory downwards ... . Unfortunately, the 'save' did not include ... -
Help needed with calculating screen addressesCan anyone help me finally crack Jonathan Cauldwell's screen addressing calculator and, more to the point, is the reason I'm struggling because this …
... x coordinate and the screen memory address I'm ... 256 = 16384 = start of screen display.
ld d,a ... ; squares 0 - 31 across screen.
add a,e ... e,a ; de = address of screen.
ret
Screen buffer Tip from Raff CeccoRaff very kindly gave me this tip: "Incidentally, I remembered a trick I used on the Z80 for extra speed: When clearing the screen buffer, it was a…
... :
When clearing the screen buffer, it was actually much ... to the end of the screen memory area and push zero values ... onto the stack until the screen area was filled.
memory. I think this worked because ...Where does the BASIC program sit 48K Spectrum memory?Hi there First post so be gentle, I've had a spectrum since the 80's and have recently started programming it for fun again. I wrote the followin…
... POKE command directly to the screen memory.
5 LET a ... part of memory first then dump it to the screen quickly? Where ...A sped up pixel-shift routine for 1-byte–wide spritesHere’s an optimized (for speed) real-time sprite shifting routine for sprites that are one byte wide. It uses no memory variables for storage of inte…
... wide. It uses no memory variables for storage of intermediate ... needs to be aligned in memory with something like
... />
ex de,hl ;save screen address in DE
ex de,hl ;screen address -> DE, spite data ...ZXSCLZF - Yet another Screen CompressorQuick disclaimer before I continue, this compressor does not shrink screens as small as some of the others posted here, in particular the very good z…
... offset that covers the Spectrum Screen Memory (6912bytes so only 13bits ... progression follow the spectrum screen memory layout in a way ... etc...). It scans the screen memory by character square so -& ... ; 7t - move into screen memory (basically add 16384 to the ...is there a way of reading characters off the screen and turning that into a string? this has to be done in basic. i know it would have something to do with peeking memory (maybe screen memory) but would this change due to programs r…
... something to do with peeking memory (maybe screen memory) but would this change ... due to programs running in the memory ... ? i also need it to carry on reading the screen ...[Asm] Is this nested loop faster than LDIR or a bunch of unrolled LDI's?Hi all. I'm learning Z80 asm on Speccy 48K, and to start with I decided to write my own "CLS" routine (without relying on ROM calls or LDIR) as a lea…
... ld (SYSVAR_BORDCR),a ; Save the selected color to the ... />
; Clear attributes memory.
ld a,FLASH_OFF | ... /> ld (SYSVAR_ATTR_P),a ; Save the selected attributes to the ... br />
; Clear screen memory.
ld a,%00000000 ; Select ...line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... it's position in the screen memory (HL for the sake of ... to HL).
This should save a lot of time rather ...PAW questionThis may not be the right place but anyways there it goes: I've been trying to figure out how to import graphic files in .SCR format in the PAW parse…
... /> LDIR ; now we load the screen memory with the information at HL ... because the way the spectrum screen memory is organised using these chunks ... is to go into basic, SAVE "SCREEN" CODE 16384,6912, load the ... SCR then press space to save the SCREEN into a TAP or ..."La Abad?a del Crimen" - English versionOK, I've started a new thread for this, as the discussion about "La Abad?a" in the [url="http://www.worldofspectrum.org/forums/viewtopic.php?mode=vie…
... the game will appears a screen message requesting for the ... In SPECTRUM version you save status in memory pressing symultaneosly SYMBOL SHIFTand ... MSX, then will appear on screen a flashing cursor. Press ... +ENTER). Will appears on screen a cursor, next press ...Best Soccer Game Ever!What?s your favorite spectrum soccer game ever? For me, Emlyn Hughes International Soccer; Match Day;Trak Suite Manager;MultiPlayer Soccer Manager. C…
... routine to save on memory for reducing the amount of memory for screen displays ... . we always made sure the screen-shots looked good - budget games ...Martianoids Map Editor Yup, I`ve managed to get instructions written it`s now ready for downloading at [url="http://www.angelfire.com/retro/carcass/index.htm"]www.angelf…
... Basic for the Amiga - no memory or screen restrictions.
But ... , add a very simple load/save screen.
The big problem would ... additional graphics for the menu screen and ingame desplay just before ...An emulator(another on of my projects) Does anyone know how to write an emulator? The emulated computer is very simple (a MK14, infact -also by Sir Clive) and a…
... , so I'm trying to save up the required $80-something ... print text at anywhere on screen, pixel rather than character)
screen memory etc) to play with, and ...New Turbo-Load version of Tales From A Parallel UniverseNot very interesting to most, but I know some of you still use 'real' Spectrums. While fiddling around with a program I created ages ago to build c…
... ]
It loads into screen memory, so just hit 'enter' at ... while using it was to save the screen as a .scr file ... wanted to compress into Spectrum memory and then just restore the ... file directly back into the screen area.
