-
rotating HL left through CarryI've tried this several ways, and it works for a while, then a particular value has a bit set in an inconvenient place and it all goes to pot. Eg: "…
... bytes and 72 T-states.
I don't think we can ... 's 9 bytes and 126 T-states.
Or even smaller ... /> Now 8 bytes and 162 T-states.
[I]OBS: Still ... -
rotating HL left through CarryI've tried this several ways, and it works for a while, then a particular value has a bit set in an inconvenient place and it all goes to pot. Eg: "…
... just 11 bytes and 72 T-states.
[I]OBS: Still ... -
rotating HL left through CarryI've tried this several ways, and it works for a while, then a particular value has a bit set in an inconvenient place and it all goes to pot. Eg: "…
... takes 13 bytes and 80 T-states. The first code from my ... -
rotating HL left through CarryI've tried this several ways, and it works for a while, then a particular value has a bit set in an inconvenient place and it all goes to pot. Eg: "…
... takes 13 bytes and 80 T-states. The first code from my ... shorter in size nor in T-states execution... ;] and of course i ... -
rotating HL left through CarryI've tried this several ways, and it works for a while, then a particular value has a bit set in an inconvenient place and it all goes to pot. Eg: "…
... shorter in size nor in T-states execution... ;] and of course i ... .worldofspectrum.org/forums/showthread.php?t=38179"]BIFROST*[/URL]. I hope ... -
rotating HL left through CarryI've tried this several ways, and it works for a while, then a particular value has a bit set in an inconvenient place and it all goes to pot. Eg: "…
... ,A 4
106 T states I think. Using memory is ... -
rotating HL left through CarryI've tried this several ways, and it works for a while, then a particular value has a bit set in an inconvenient place and it all goes to pot. Eg: "…
... /> Good work! It's 70 T-states and 14 bytes (or 15 ... -
rotating HL left through CarryI've tried this several ways, and it works for a while, then a particular value has a bit set in an inconvenient place and it all goes to pot. Eg: "…
... version which uses the fewest T states..! :smile:
I do ... useful, as I still haven't fully grasped "RL" vs "ADC ... -
A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... It seems the preprocessor doesn't like using parenthesis when there ... the sub-routines that don't have parameters.
... original code executes in 164 T-states (not considering the execution time ... new code executes in 118 T-states, thus it's almost 40 ... -
BUG in zxspin and SpecEmu - read Loading speed in WAV fileI'm created a new save, but it can run at 44.1 KHz, to test it, i make a new file from WAV 44.1 KHz to 88.2 KHz. Load this file in a emulator zx-spin…
[QUOTE=Z80user;610728]The EAR input "can" be change in 290, 349 or 399 T-States
AAAAB = 290
AAAAC = 349
AAAAD = 399[/quote]
Could you post a video of this loader working with a real tape deck? -
LZ77 en/decodingI've written an LZ77 en/decoding routine as I couldn't find one around for the Spectrum. Initially I'm just doing it in BASIC to get the logic right.…
... code are down in red. [T-States/Bytes]
RLD/RRD 7 ... +7+18+7+7 = 97 T-States = 13 Bytes[CODE]LD A ... +4*(4+8+8 ) = 107 T-States = 5+4*5 = 25 bytes ... -
Shadow registers.I assume it's faster to transfer the registers to the shadow registers rather than using the stack? Let's say that I want to temporarily preserve the…
... ' and EXX are just 4 t-states each, so they're as ... . If changing BC+DE isn't a problem it's probably ... '. As a bonus it doesn't affect the current flags, if ... -
3D Wireframe/vector animation creator and player?Is there any software that can help record wireframe 3D animations by creating a file that stores just the coordinates and lines? If the answer is "n…
... this many line animations over 't' frames" per line. -
3D Deathchase on the Commodore 643D Deathchase has been ported to the C64, at least according to Micro-Mart. According to this week's MM, the port is called Hell Racer, and here's a …
... ]
There's about two years between them; the C64 ... , top resolution is 320x200 with two per 8x8 pixel attribute cell in ... 160x200 multicolour with two shared and two unique colours per 4x8 cell, 121 ... -
Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …
What's the average speed of copying a single byte in t-states? -
Incorrect Spectrum +3 emulation: different results on Fuse and SpecEmuWhen developing and testing [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0027591"]Rotatrix[/URL], I noticed different results on Fuse and S…
... delay of another 2 T-states before changing the border ... [*] 2+3: adds 1 T-state delay in comparison to ... running with a 3 T-states delay in comparison to ... LIST]
What we don't know yet:
[LIST]
T-state delay).
[*] ... -
The most powerful 8-bit machine, and CPU?Further to the discussion in: [url]http://www.worldofspectrum.org/forums/newreply.php?do=newreply&p=621787[/url] What actually is the best 8-bit ma…
... , but the instruction set isn't one of those.[/QUOTE]
t as per that Wiki! -
ESXDOS v0.8.0 released (with NMI Browser)Hello, To celebrate the speccy's 30th birthday, here's the latest version of ESXDOS for DivIDE users. The full changelog is too long to post here, s…
... . But I can't see why you wouldn't be able to ... critical timed that one can't read FAT sectors to get ... ' from memory is about few T states (~6 reads from memory - 2 ... update pointer). but esxdos don't have syscall to get raw ... -
How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... really cope without these few t-states. Unless you are making beeper ... -
ESXDOS v0.8.0 released (with NMI Browser)Hello, To celebrate the speccy's 30th birthday, here's the latest version of ESXDOS for DivIDE users. The full changelog is too long to post here, s…
... file so it doesn't have to scan the ... from memory is about few T states (~6 reads from memory - ... pointer). but esxdos don't have syscall to get raw ... :-) ) but unfortunately it doesn't work out: the routine performs ... the main loop doesn't even keep track of where ... -
Incorrect Spectrum +3 emulation: different results on Fuse and SpecEmuWhen developing and testing [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0027591"]Rotatrix[/URL], I noticed different results on Fuse and S…
... be as much as 24 T-States between ZXSpin and, basically, everything ... -
OpenSE Software CompatibilityWith the earlier Open82 project a page was set up on Wikia ([url]http://scratchpad.wikia.com/wiki/Open82[/url]) with compatibility information on var…
... right?... Even if you can't cram in anything else, FASTER ... the initialization routine), but don't free up enough bytes to ... only talking about a few t-states here, so it's unlikely ... I'm happy it doesn't break anything or introduce any ... -
Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…
... on the TK90X is 59736 T-states!
[I]EDIT ... " and "iocontention" from fusetest didn't work.[/I] -
ULAPlus: showing different screen modes in one screenI wanted to write a demo showing the same screen, converted to various screen modes available on the Spectrum (well, a Spectrum clone capable of show…
... ?[/QUOTE]
I don't really know. My clone does ... point is that I didn't have the border stripes at ... displayed) a little short (4 T-states), the flashing tiny blocks dissappear ... -
Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…
... br />
I don't have a TK90X right now ... (although contention detection didn't work for the Brazilian TK90X ... .krakow.pl/~jb/qaop/t/minfo.tap"]minfo[/URL ... it will be 4 T-states further than marked in the ... In practice, you won't be able to accurately measure ... -
Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... /> can be this (saving 7 T states in this code and 10 ...
