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Banked memory running slower?I've just compiled a TAP which includes bank6, it loads ok, but the routines that are paged in run slightly slower. The Z80 snapshot has no such pro…
... first, lowest, byte, and wait for it to change.< ... a HALT, read a byte from 23672, start ... and checking for a change in the byte at 23672. ...
Another trick for calling machine code from BASIC ... actually call it one byte higher without breaking anything. ... -
Pixel level collision detection[SIZE=3][FONT=Calibri]I need to do some pixel level collision detection. Assuming I have a byte of my ?player? sprite in DE and a byte of screen to t…
... box smaller :) 10x10 middle pixels for sprite 16x16 pixels and so.
for such forgiving collisions ;) -
64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
... write colours, instead of '6', for example, might be to use ... a bit shift.
For scrolling, I'd suggest picking ... around that. The simplest method (for sprite rendering) is to have a ... be clever, try combining a sprite layer screen with a scrollable ... -
Games that would convert well (graphically)Creating this thread to post some converted in-game screens and mock-ups. They have in common the fact that they would work on the spectrum, regardin…
... in theory.
Again yes for sprite sheets, those make work simpler ... some tough about attributes. For example in Blues Brothers, ... / ink combination will allow for acceptable color clash.
... The same for Speedball, It's mostly monochrome ... -
Speccy Vs Amstrad CPC Vs C64I hope no one minds me posting this here as well as in the announcements section. I'll delete it if there is a problem. It's childish fun but can I …
... to get up to 21 256-byte sectors per track where an ... has 8 or 9 512-byte sectors. Therefore it's capable ... -
Features that are still wanted in Spectrum emulation.Features that are still wanted in Spectrum emulation. 4 USB joystick/gamepad input for real multiplayer games - Yes, Bomb Munchies.... - Sinclair 12…
... to the high score table in this game, then ... your name into the highscore table" or whatever routines, ... entries in the high score table), and names if included ... thoughts but your suggestions for the high score update ... that the high score table for each game is in ... -
Specbas new game PacmanWell I have been beavering away at this for a bit and I am now happy with it. (nearly) it's not bad (even if I say so myself) [img]http://i699.phot…
... time, thread 2 encounters a "SPRITE ERASE 3" command. It dutifully ... removes the last sprite in the list, as instructed ... be lucky and the data for sprite 3 might still exist - ... crash usually happens in the sprite drawing code... :)
... -
Specbas new game PacmanWell I have been beavering away at this for a bit and I am now happy with it. (nearly) it's not bad (even if I say so myself) [img]http://i699.phot…
... time, thread 2 encounters a "SPRITE ERASE 3" command. It dutifully ... removes the last sprite in the list, as instructed ... be lucky and the data for sprite 3 might still exist - ... crash usually happens in the sprite drawing code... :)
... -
Features that are still wanted in Spectrum emulation.Features that are still wanted in Spectrum emulation. 4 USB joystick/gamepad input for real multiplayer games - Yes, Bomb Munchies.... - Sinclair 12…
... the two 8-bit halves for clarity though. black cat ... address used in software is for each device? It might ... not be so critical for trying to emulate the ... use it's critical. For instance, the Interface 1 ... decode a full 256!
As for that DK'Tronics ... -
ZX-Modules updatesDear readers, depending on a common change on the file list (establishing the meta block feature), I've updated many of my ZX-Modules applications. …
... useful. So I'm waiting for an official release, together with ... on a 'find bytes' dialog for the datablock composer's memory ... I already made a byte sequence editor for ZX-Assembler which I ... -
X128 - The new BEST emulator?I just got a copy of x128. Have you seen the stuff that this can now emulate? Just out of interest what is now seen as the best ZX emulator?
Just a quick question - why is Quazar's SAM hardware off the table for emulation?
D. -
X128 - The new BEST emulator?I just got a copy of x128. Have you seen the stuff that this can now emulate? Just out of interest what is now seen as the best ZX emulator?
... 's SAM hardware off the table for emulation?[/quote]
Back ... avoid a crash in sales for the real hardware. I wasn ... -
X128 - The new BEST emulator?I just got a copy of x128. Have you seen the stuff that this can now emulate? Just out of interest what is now seen as the best ZX emulator?
... 's SAM hardware off the table for emulation?[/quote]
Back ... avoid a crash in sales for the real hardware. I wasn ... -
Full original Spectrum music?Many specy music are coming from somewhere: the game of other platform, or from classical author (for example: Jet Set Willy, Manic Miner), but I sea…
I had a tritone table for pitch bending in the old ... source code i'd written for zx and all my source ... -
SpecBAS Screen wipeAn old effect, but a good one - you'll need this file: [url]https://sites.google.com/site/pauldunn/moon.png[/url] to run this program. [code] 10 REM…
Here's a new version for you - it's much smaller ( ... COPY img,0,256 TO 0
30 FOR y=SCRh-1 ... -
I feel they could have done this.After reading the ZX Spectrum ULA, I learned about how the ULA detects if the Z80 if going to access memory in the next cycle and stops it if the ULA…
... a right faff to program for and very slow compared to ... ? I suppose it's useful for sprite collision and such. -
maths help 'JSW'JET SET WILLY uses a lookup table to play the opening tune (Moonlight Sonata) this is the table [code] 34299 DEFB 81,60,51,81,60,51,81,60,51,81,…
... 't really a look-up table for notes as such, but it ... same thing. It's a table for the number of times the ... you type in your lookup table :) -
I feel they could have done this.After reading the ZX Spectrum ULA, I learned about how the ULA detects if the Z80 if going to access memory in the next cycle and stops it if the ULA…
... a right faff to program for and very slow compared to ... RAM. The Spectrum is known for its uage of fast blitting ... it's useful for sprite collision and such.[/quote] For the Spectrum, reading ... -
IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... cost in terms of ICs; for the same reason most spectrum ... 8 bits to have 256 bytes set aside for memory mapped io ... 's selling points -- easy interfacing for both io and drams. Z80 ... -
IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... 8 bits to have 256 bytes set aside for memory mapped io ... takes a rather different approach: for performance reasons, PCI devices may ... selling points -- easy interfacing for both io and drams. Z80 ... that. (... and by “application”, for those wondering, we do of ... -
Best Z80 Assembler for PC?There's probably already a thread for this so if somebody could please point me at it I'd appreciate it. If there isn't then please respond here wit…
... br />
- 256-aligned data section
- 256-aligned data section ... br /> defc ORGADDR = $10000 - (256*((SIZE / 256) + 1))
ELSE
... is ORGed at a 256-byte aligned address and is ... it will also be a 256-byte aligned. du follows da2 ... -
NTSC Compatibility?Correct me if I'm wrong, but wasn't the Timex 2068 the only NTSC clone built of the ZX Spectrum? And I use clone lightly... From what I underst…
... Z80 would need to wait for the vertical blank interrupt, ... blank, alter the attribute table for that line. Why would ... this not work for the TS? Or, is ... a loop and look for a ula access at ... game that will not work for this reason.[/quote]
... -
Fixed point math lib?Is there a liberally licensed fixed point math lib for z80 somewhere? When searching, I expected to find a bunch of GPL'd ones and perhaps one or two…
... placing the tables on a 256 byte boundary and effectively using 'l ... -
Animation loopHi. How would you read from a lookup table and cycle through the animations when a key is pressed it's Just the loop example i'm interested in not…
... address of the graphics for sprite 1
- DW sprite 2 contains the ... memory address of the graphics for sprite 2
etc.?
Animation loopHi. How would you read from a lookup table and cycle through the animations when a key is pressed it's Just the loop example i'm interested in not…
... address of the graphics for sprite 1
- DW sprite 2 contains the ... memory address of the graphics for sprite 2
etc.?
Animation loopHi. How would you read from a lookup table and cycle through the animations when a key is pressed it's Just the loop example i'm interested in not…
each frame same for one player/character
[quote=" ... address of the graphics for sprite 1
- DW sprite 2 contains the ... memory address of the graphics for sprite 2
etc.?
Dev so far[url="http://dev.worldofspectrum.org"]dev.worldofspectrum.org[/url] There's no styling done yet while I work on functionality, and there's no guar…
... you can export the search table for publishers - this exports as CSV ... . The titles table will export the results very ...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:/…
... (and they reshaped their rate table) - for example before I paid $6 ... think it's show-stopper for ZX-fixer, because shipping cost ...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:/…
... (and they reshaped their rate table) - for example before I paid $6 ...Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…
... ). But also useful for selecting from a jump table, for instance.
for the IX/IY forms of ...
