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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…
... , but ran at 1/16 speed. The following Basic program takes ... 's a 40% increase in speed!!
Not only that ... with the 6502 read-modify-write instructions better than 20 Commodes ... , where addr is in the screen memory area.)
There ... -
Changing the way SCREEN$ is loadedThe way the speccy loads in a SCREEN$ is interesting - top two-thirds first, then middle and finally the bottom, which is due to the way the speccy d…
... the speccy loads in a SCREEN$ is interesting - top two-thirds ... technically possible that one may write a SAVEr and a corresponding ... -
RUSSIAN SOFTWARE and real ZXRussian ZX games is writed on russian ZX clones and support hardware feature TURBO OFF ( for ZX clone ZS SCORPION ). Russian ZX clone ZS SCORPION use…
... turbo off)
Write only ports #7FFD and #1FFD ... run always at original ZX speed (3.5 MHz)
write to paging port data from ... = on ZX128/+2 write to paging port data from ... .worldofspectrum.org/showscreen.cgi?screen=screens/in-game/d ... -
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…
... again troubled by the unusal screen design of the Spectrum. :)
screen (in the same 1/3 ... example, if I want to write something into four character blocks ... -
FUSE loads .wav files but audio2tape fails to create .tapI'm trying to write a utility to extract ASM listings out of OCP Assembler save files. I have a few audio tapes with assembler files that I want to c…
I'm trying to write a utility to ... . My listing appeared on the screen.
However, ... libspectrum error: write_turbo: converting Turbo Speed Data Block (ID 0x11); conversion ... libspectrum error: write_turbo: converting Turbo Speed Data Block (ID 0x11); ... -
Give me your Minigame ideas...I am working on a new MiniGame as I write this. It is a combined version of Snake and Bingo. On a full screen at the start the numbers 1 to 30 are …
... a new MiniGame as I write this.
... Bingo. On a full screen at the start the ... When you finish the screen more numbers will be ... You can therefore start a screen with just finishing the game ... i have is the cardgame Speed. Even with more levels ... -
SCREEN$ 1.9e Released!And here's another update! [url]http://paul.dunn.googlepages.com/SCREEN_1.9e.rar[/url] There's a few new things in this release, but it's mostly bu…
... *before* the stripes appear on-screen.
I've also ... that people encounter.
Speed has been increased quite drastically ... -
Snow on screen of 48K Speccyok you wizards I fixed up my 4116 ram issue as Winston and McLeod advised me before by replacing with 4164's.... all I could find here in Singapore (…
... 've amazed myself at the speed k7zx can work, although some ... it working. Snow on the screen. Particularly on cyan / red. See ... -
Project OTLA / k7zx (high speed loading)Hello, I am proud fan of zx spectrum (I do not have speccy, but clones (Didaktik Gama, Didaktik M)), I am using portable CD player to load games. Al…
... . Also I found the high speed loading projects OTLA (former k7zx ... to convert games to high speed loading audio. It does works ... /> 1) loader will: speedload the screen$, then speedload the data to ... routinne for normal
loading speed to load last block. -
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…
... copying graphics directly to screen memory starting at 16384. ... I'm experimenting with screen buffer where I could ... br />
The speed is OK, but somehow I ... any sprites on the screen, I'm just copying ... static image from buffer to screen after HALT.
Spectranet updateWell, I've not put an update in here for too long, so here's a summary of what's been developing ... * A snapshot manager module. Basically, you can…
... and whether the 128K alternate screen is in use.
* Snapshot ... ROMs at inconvenient times.
* Write an FTP client library, and ... stencils made up to speed assembly.
* Write some manual pages in ...Bit functions speedI just stared nonplussed at the documentation for the bit functions. Apparently, if you're using the accumulator, using AND and OR is faster than se…
... a register for for maximised speed.
Anyone else ... thought that clever use of PUSH and POP to copy data ... an awesome example of code speed optimization. Even if trying to ...ula bookula book is here: [url]http://www.zxdesign.info/book/[/url] can i post sam coupe stuff here - she kind of is a speccy if you stuff the speccy rom i…
... the effect the menu screen mimics was called dot ...
on normal tv screen is a blurr of phosphorous ... to display proportional font using push xh xl yh yl? ... the left border of the screen - it aslo has some ... 3 and 4 screen off full tilt external ram speed
...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 in ... the object code to the screen (location 16384) so I could ... had just assembled to a screen dump of 6912 BYTES. As ... it would be difficult to write more than 7K of object ...A fast DRAW routineI was investigating how to speed up the line drawing for the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=20225"]BASIC compiler[/URL]…
... was investigating how to speed up the line ... mask
; H'L' = Screen Address of pixel
;; Given an HL screen position, calculates
;; the ... nc
push hl
push de
;; gets ATTR ...Screen$ command, ROM routineHi All, Does anyone know which ROM routine to call for the Screen$ command (and/or the ATTR command)? Any comments on how well it works or the spee…
... routine to call for the Screen$ command (and/or the ATTR ... well it works or the speed compared to a homemade RAM ...Hi everybody! Need help trying to rescue a ZX 48K...Hi, since this is my first post, a bit of info about me: I'm an Italian guy, now living in Poland (Warsaw), informatics and electronic geek since…
... hard to read characters on screen (pretty much same issue of ... surprise I got just a screen with fat vertical lines and ... -blocks on the screen, blinking, probably at the same speed of normal ... 4 fat lines. Trying to push some keys on the keyboard ...Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
... use push/pop, but copying a four character sprite to the screen ... takes three cycles of push/pop.
screen buffer version instead, which is ... thought. Could also break the screen buffer into 2x1 blocks and ...(part of) screen to UDGHere is a routine to copy a Y,X-position on screen to a UDG. 0<=y<=23 0<=x<=31 144<=udg<=165 (UDG "A" to UDG "U") [code] ; start code with ; PRINT …
Here is a routine to copy a Y,X-position on screen to a UDG.
0K7zx hi speed loadingHi all As stated before i've been using a cassette adapter on my grey +2 to load mp3 tapes. I came across this software for windows which speed load…
... this software for windows which speed loads games apparently, but I ... tape files i convert do speed load on the spectrum but ... had an 'out of memory' screen and a blue border.
59 animated loading screen reveals in 15 minutesHere's the product of a lazy Sunday listening to Test Match Special :) 59 of the more interesting loading screen reveals in 15 minutes - I've doubled…
... loading screen reveals in 15 minutes - I've doubled the playback speed ... as original speed is slow enough to ...Kiwi OS for z80 computerHi everyone, Nearly made my z80 computer with 2K ROM 32K RAM. It has an OS im still writing called Kiwi (apple, blackberry, you get the idea ;D) he…
... /> ASCII
PRINT_LOOP
PUSH AF
LD A, (HL ... ;************************************
PRINT_DHEX
PUSH DE ;REMEMBER D
LD ... /> LD A, $01 ;CLEAR SCREEN COMMAND
OUT ($1), A ... br /> CALL WRITE_BYTE ;WRITE THE CONTROL BYTE TO ...A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... If you want to write something similar in pure ... /> // Means we can write a lot less code :)
screen - border
struct sp1_Rect levelbrect ... uchar dx; // signed horizontal speed in pixels
uchar dy ...Another Roger Jowett oneHello guys, I want print here the conversation with Roger Jowett. He is spamming all e-mails he can get hold of. Especially for the Spectrum30 show…
... -mail for people to write about the Spectrum show. ... hardware compression at the full speed the
modem can ... v92 modem at ? the speed it was designed to ... of installing a hi speed 921600bps serial port in ... about eh bandwidth the screen resolution or the font ...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…
... to write a demo showing the same screen, converted to various screen ... [/img]
The screen is divided into four blocks ... one, a standard Timex HiColor screen (hires attributes using the ... block is a Timex HiColour screen with ULA+ palette enabled.< ...BIFROST* ENGINE 1.2 released!Another improved version of the BIFROST* ENGINE is now available! Download it here: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0027405[/u…
... the programmer are optimized for speed, using unrolled loops and a ... /erase multicolor tiles instantly on screen, so these changes will appear ... at a certain location on screen, then use automated updates to ... " that I'm finishing to write (I will upload it in ...Interesting tip to speed up user experience...Hi Folks, I suspect many of you will already know this but it only dawned on me a couple of weeks ago. Whilst trying to improve the speed on my XIN…
... to improve the speed on my XINPUT (full screen, typed INPUT replacement ... Set REPDEL & REPPER to speed up keyboard response
1010 ...Interview with Clive Townsend (Saboteur)Here you have at [URL="http://www.elmundodelspectrum.com"]www.elmundodelspectrum.com[/URL] this exclusive interview with Clive Townsend. Don?t forget…
... game I was asked to write was called Death Pit. ... into a flip-screen game, which solved the speed problem. I ...
[I]P- Saboteur loading screen was based on an old ... the PC for a flip-screen digitised version. Then a ... with the Sab loading screen on them, and of ...Zero 0.5 ReleasedAfter a bit of a hiatus, the next update of Zero is now available [URL="www.ramtop.wordpress.com"]here[/URL]. Feedback and bug-reports appreciated! …
... via Options.
+ On screen indicators, like tape and disk ... when required.
+ Emulation speed control added in Options.
write from memory, ports etc. ... when switching back from full screen.
- Fixed the ...Designing an icon-driven adventure: looking for adviceHi fellas, after the release of Funky Fungus, I am currently contemplating the possibility of designing an icon-driven adventure with location graph…
... write it in BASIC and maybe compile it later for better speed ... portion of the screen, but are there other screen compressors which will ...
