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RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…
... br /> [*]Whenever you want to show this screen, you could first decompress ... back into a regular screen. However this method requires ... block and write it directly to the ZX-Spectrum screen.[/LIST]< ... routine to transform RCS format back into a regular screen. The ... -
Red DwarfA Red Dwarf video game - good or bad idea? (given its recent resurgence in popularity in the UK) My ideas: [b]Plots[/b] - An interquel which bridg…
... using screen-swapping?
I presume the fastest way to use ... few bytes, page in the screen, write those bytes, switch, read, ... memory, and only ever write to the one screen at the bottom of ... re working outside the contended screen time you can use the ... -
Screens and BasicA question about the ZX screens. I am using software to convert my own art and drawings to the ZX Spectrum. I have some tools to change .jpg files in…
... what if I want to use a screen image in a program ... ?
For example: suppose I want to write ... ]
You need to load the screen in a memoryarea and ... +16384"]copy block routine [/URL]to copy to screen. -
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…
... it might be possible to use the trick from ... br /> Rather than storing your screen map as an array of ... bit value will have to be distributed between the ... the byte you want to write to the screen for that particular ... of your screen map, issue a RET to kick things ... -
SAM Coupe - a video problemHi mates. Lately I managed to acquire a SAM Coupe 512K. There are, however, certain problems that - I thought - You might help me with, in a mome…
...
Lately I managed to acquire a SAM Coupe 512K ... />
1) The screen is black/white only. From ... low side of the screen. They blink and ... I know I should write to some SAM Coupe people ... if reset is active + screen defects continue then is unstable ... -
ZX-Assembler in progress...Dear readers, I just want to announce that ZX-Assembler is not longer only an idea in my mind. It's just alive. Unfortunately, it's too early to mak…
... start ZX-Assembler, and write code and store it ... "routine to print tile to screen", and addresses 64000 to 64256 contains ... /> 53200: comment "routine to print tile to screen"
64000: mode- ... then perhaps export it to SkoolKit to generate a HTML version ... -
UK video recorder in the USA.If I take my UK video recorder to the USA, will it still work if I get a step up transformer and a device capable of displaying PAL. Or will the 60Hz…
... is PAL formatted, the screen will go pink and ... insult to injury.
You can build boxes to force ... ? I am yet to get around to buying my kit, ... I am yet to get around to transporting anything electronic ... can run ePSXe perfectly to the point where my ... -
.SNA snapshot compatability between esxDOS and emulators?Currently I am using a ZX Spectrum 128K (toastrack) with DivIDE Plus (with new GAL's) and esxDOS 0.8.5. It saves and loads 128K .SNA snapshots withou…
... to press 'W,0' to not only write to rom page 1, but also to ... see the esxDOS bios/boot screen (before the black paper and ... with SPACE pressed, esxDOS boot screen is displayed.
-Press NMI ... pressing SPACE. The esxDOS boot screen does not appear.
- ... -
20-column multicolour: a half-baked ideaI was writing an email reply to one Mr Jowett about multicolour routines, and in that way that explaining something to someone else makes you think "…
... happy that gives another avenue to explore. On the other ... eventual solution is going to rely on lots of ... is a nice way to fill time without incurring ... if you do need to write to the screen while contention is going ... of using the shadow screen as well. -
Scrolling by 2 pixelsWhat is the fastest way of scrolling a Spectrum screen line by 2 pixels left or right? When thinking about it I've come to this simple solution: [C…
... ]Column coordinates within the Spectrum screen always respect the 256 bytes ... on linear screen buffer in memory. I didn't write it as ... to real screen
N - are not directly copied to screen but deliver bits to ... my case it is 28 screen bytes + 2 N bytes on ... -
Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…
... both produce the full screen horizon effects correctly however ... because the next write isn't to that attribute squares ... write instructions, tomahawk must update the screen by popping bytes to the screen ... takes turns to process the z80's writes to screen.
... -
Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…
... and I wonder if the screen write algorithms are where you'd ... written to screen.
I think I need to add some screen captures ... :smile:
games seem to fall into three clear camps ... get some expert speccy coders to write new software with it i ... -
Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…
... on offscreen before being written to screen.
[/QUOTE]
I ... did too, to look at how it worked ... . I was half expecting it to be a trail as far ... may well go to the trouble of set attributes; write pixels and ... -
Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…
... background and renews the whole screen every frame.
even though ... back to the screen) the clashbasher logic just see's a write to the ... 'll try adding logic to ignore a write if the new byte ... />
It would be nice to get some improvment in this ... -
MC LPRINT 23681Having problems with this routine to print large on the screen using LPRINT, it works ok in BASIC, but cant seem to get it to loop for some reason in…
... this routine to print large on the screen using LPRINT ... , it works ok in BASIC, but cant seem to ... get it to loop for some ... r' register is sensitive to the length of the loop ... LPRINT call seems to write to the screen. I'm not ... -
Movin And A Groovin Horizontal Flip improvementOn the left is the flip horizontal portion from Andy Pennell'S excellent Movin' & a Groovin' machine code screen routines from Your Spectrum #19 (Oct…
... the loops due to not having to continually reload DE ... ) is used, but has to be first stored. This is ... a byte with a direct write to an address at the ... end of the routine to save SP, however this ... ).
[CODE]Full screen flip
attrs ld ... -
The making of R-Type on the speccy book, free downloadBob Pape, the guy who wrote R-Type on the speccy has made his book, "IT'S BEHIND YOU: the making of a computer game", available for free download: [u…
... the registers that control the screen display, mode, sprites, scrolling, ... 53270,0-8 (9 returns to full screen..) will give you the ... 0-255 to cover the whole X position on screen. so if ... - $07e7.. much like you write direct to screen on speccy. you can also ... -
Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…
... need to do an OUT to port #7FFD to select the ... that byte also needs to contain the information about ... it doesn't know how to write to bank 7.
To copy it to the screen (bank 5) just ... to copy - writing to the screen here so don't want to ... -
Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…
... long the propeller would take to go through the entire display ... :-
If I write to the entire screen with clashbasher on and ... the bottom half of the screen with 0x0f bytes after turning ... />
The top half of screen remains fully detailed and the ... -
Finders Keepers+I know a few of you are interested in this project so I thought it was about time I started a proper thread for it rather than just slipping bits int…
... know more about programming, and write the odd snippet, I can ... escaped" - which doesn't seem to be an ending, actually. Let ... some solid ideas about how to improve the mazes. If anything ... faster, plus I could write to an alternative screen and flip pages when ... -
display file addressing; screen slicingWhile working on this Compendium I'm updating or rewriting a lot of stuff. One thing I eventually came to appreciate was the simple & clever way in w…
[QUOTE=slenkar;726974]did they use IM2 and a jump table to start drawing sprites ?[/QUOTE]
Often they just used the floating bus to determine when to write to the screen. -
New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…
[QUOTE=Shaos;727047]Really? Is it a bug or feature? ;)
Which address?[/QUOTE]
It deliberately tries to write to #0000 during a calculator operation, and there's a bug where the screen scroll rolls over into #3FFF. -
New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…
... =aowen;727061]It deliberately tries to write to #0000 during a calculator operation ... 's a bug where the screen scroll rolls over into #3FFF ... , I see. My scheme allows to write only to #0000...#0FFF area, so ... -
ANN: Spud v0.230Ok, another new Spud... [URL="http://bit.ly/16OFkuQ"][COLOR=#0066cc]http://bit.ly/16OFkuQ[/COLOR][/URL] [quote] v0.230 ADDED: Options. When selec…
... of the settings for joystick, screen size (x1, x2, x3, ... />
and, ideally, could Spud write to a configuration file in it ... />
* cassette - use this to 'insert' a cassette into Spud ... , although no software is known to need this.
... -
Another vertical scrolling questionwhile talking about w256 x h128 vertical scrolling, are 128k modes have any advantages over 48k models? has extra ram or swappable screen buffer any…
... . The screen banks are contended. Although the smart way to deal with ... and have the routines that write to the screen in bank 2 and ... only call them when you need to ... update the screen. -
Rendering clipped glyphSometimes you need to render a glyph of arbitrary size to the screen. And clip it. For example: drawing a mouse cursor means combining drawing of a…
... composed of messages (eg 'write BC bytes from address HL ... not have to worry about running off the screen, etc. ... simple as a rectangle to confine drawing to screen boundaries or even ... a program to open several terminals simultaneously on screen. An obvious ... -
z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…
... a good way to time sprites to screen refresh? or is ... that 'wpoke'. Remember to save and restore any ...
If you want to write the ISR in C, you ... * macros to save and restore registers and write your C ... update array for full size screen 32x24
53 ; ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... ; silence AY
call sound_2 ; write to data register
ld hl ... br /> call cls_lower ; clear lower screen
pop af ; restore report ... ' ; channel
defw print_out, report_j ; screen
defb 'S' ; channel
FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... a C library to write to the Spectrum or Timex screen (some new code ... it would be pretty trivial to write drivers for the other machines ... as they mostly have linear screen buffers. Obviously the ZX81 would ...
