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price of magik lenslock ?After some time playing this text adventure I saved my progress to tape, but when restoring I came across what seems to be a lenslock protection, is …
... two letter code to screen instead of keeping it to itself. It can ... original, also redirects load/save to use ROM routines.....
price of magik lenslock ?After some time playing this text adventure I saved my progress to tape, but when restoring I came across what seems to be a lenslock protection, is …
... two letter code to screen instead of keeping it to itself. It can ... original, also redirects load/save to use ROM routines.....
[/quote ...price of magik lenslock ?After some time playing this text adventure I saved my progress to tape, but when restoring I came across what seems to be a lenslock protection, is …
... two letter code to screen instead of keeping it to itself. It can ... original, also redirects load/save to use ROM routines.....
[/quote ... with the lenslik "visible" on screen
the hacked [h] other ...[Updated] RetroVM 1.0.4 with Recreated ZX Spectrum support.A new version available the change log: - Recreated ZX Spectrum "game mode" keyboard support. - Fix a bug with multiples machines running in para…
... .tap[/url]. To get to the bug you need to pick 1 for ... which displays the ascii equivalent to screen. This is the part that ... needs the interrupt to run to get the correct ascii ... converts key press to ascii and loads it to a mem location ...The I register and IM 1Hi al! I've been doing some coding, replacing the BASIC ROM with my own code and upon examination of a few 16Kb cartridges, all the ones I've look…
... can cause the ULA to try to apply contention when the CPU does ...ZX Spectrum Sprite chipHi everyone. As I said some time ago, I wanted to make a 'virtual' Sprite chip for the ZX spectrum, on my ZEsarUX emulator. The idea is to make so…
... SRAM in the 0x0000 to 0x3FFF range actually. ... back to the problem of having to introduce contention because ... the ULA still needs exclusive access to ... the address bus to ...Best and worst jumping in a gameI've played Dynanmite Dan for the first time. I'm a bit disappointed that the jumping felt rubbish and out of place. Its just a diagonal up and strai…
... the player is allowed to flow across the screen if the jumping ... section of Platoon. Its supposed to be a serious game about ... an inhuman leap across the screen, and probably kicks the soldier ... way you could leap from screen to screen was intuitive.Drawing some spritesI figured I want to draw some sprites. My target was to do a 16x16 masked sprite. There's no clearing here, just drawing the sprites. My first ite…
... /> After setting sp to point at the start of ... ; load pixel data from screen
and l ; and ... (de),a ; and back to screen we go
inc ... de ; increment screen ptr
...ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…
... the only real solution is to generate proportional text. But ... Instead the position on screen has to be defined using the ... , indeed uses Graphical Coordinates to place the characters onscreen. ... The alternative to this would be to plot the pattern to screen via an ...ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…
... way of plotting an image to screen, the image is made up ... "] that approach[/url] to get my Characters to screen, though it's obviously ... fairly straightforward stuff for it to perform? My array in that ... pretty much up to the Nested Loops to Decide when to go down ...ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…
... that approach[/url] to get my Characters to screen, though it's ... much up to the Nested Loops to Decide when to go down ... repeated division and remainder calculations to extract individual bytes. For ... You're definitely going have to use machine code/assembly ...128k Paging a tile routine to a double bufferHi happy new year all :) Does anyone have an example of how to page a routine to the screen ie a tile routine? Thanks :)
Thanks all. Just basically wondering how you would page a graphics routine to screen from a page bank, any examples much appreciated :) Happy new year :)Compression comparisonsI did some comparisons of different compression methods. To make this relevant to zx spectrum, I first gathered a corpus of relevant data: 6660 .TAP …
... and unpack all the data to screen memory, then copy the sprites ...Problem with BC corrupting after DJNZJust for fun, I'm messing around trying to get the level maps from Lemmings to display on the screen with machine code. It's been ages since I did an…
... A instead as it seems to be free, for less bytes ... ] INC E ; ADD 256 TO SCREEN ADDRESS TO GET TO NEXT LINE[/code]
For reliably stepping down the screen one line at a time ...Problem with BC corrupting after DJNZJust for fun, I'm messing around trying to get the level maps from Lemmings to display on the screen with machine code. It's been ages since I did an…
... COUNTER
PUSH DE ; Save screen address
LD BC ... ; DO A LINE OF THE SCREEN, 32 CHARS
POP DE ... /> INC D ; ADD 256 TO SCREEN ADDRESS TO GET TO NEXT LINE
[/code]Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... here, only just good enough to solder such a job, but ... you experts could give me to get this going would be ... have 5v and some output to screen after cleaning up regulator. There ... is a white border, black screen with vertical white lines running ...Can anyone show a slight diagram of how pokes work in a jet set willy game for example?I know its kind of something to do with machine code and Memory addresses etc but would be nice to see a youtube video or some drawings etc ? .Many t…
... /> LD HL,16384 ;point to the start of screen memory
LD ... t zero
RET ; return to BASIC
[/code]
... the top left of the screen. Once you've figured out ... elsewhere on the screen etc. Because it writes to screen RAM you'll ...1986-2016.I'm early, but I'm tired of 1985. So here's the annual thirty-years after topic about Speccy games.
... the geniuses that brought to you the already reviewed ... i] platform whizzing from screen to screen with each of your ... consisting of a single screen level in random order ... ad nauseam trying to reach a new screen, and you ... don't know exactly what to ...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…
... vary from architecture to architecture. For ... to know when to apply contention. However you could have a contention on and contention ... off mode to ... see where the contention delays are. ...128K programmingDoes anyone know any good resources on assembly programming for the 128? All I'm after is an "idiot's-getting-started-guide" on how to utilise the…
... so you would need to copy it again from ... data, it may possible to compress 16Kb into 6Kb ... from any bank to screen, then decompress it from screen to bank 0. ... You would be able to store ... are then loaded from time to time into bank 0, ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... it was at all possible to make a decompressor that can ... switching, maybe by using a buffer to copy data across banks during ... then. Decompressing from one bank to another at 49152. Would be ...games your playing at the minuteAs weve done all the whats your favourites i thought id ask Just out of interest what speccy games are you playing? this week, last week? Lately mi…
I'm back on [b]Jumping Jack[/b]. I think I'm at my peak at it now, after 30 years. I got to screen 8 for the first time yesterday. Getting the hang of quickly going off one side and then going back again as soon as one of the gaps has passed.Z88DK NOOB cplot INK colorHi I am a complete NOOB with Z88DK, I am trying to draw colored circles. How does ink, paper and border work with Z88DK. I started trying to wo…
... () stands for "pixel x y to screen address" the first param will ... />
zx_saddr2aaddr() stands for "screen address to attribute address".
zx_px2bitmask ... a bitmask corresponding to the pixel within a screen byte.
P.O.W.As far as I know, a port of P.O.W. (Prisoners of War) from NHK, doesn't exist. [img]https://cld.pt/dl/download/61d19b5e-453b-489c-b17b-d3ed6fccd594/…
... Hikaru is trying to tell you that screen is generated in ... routine behind the beam generating screen, at the moment when frame ... cca 27000 T when writing to screen area is contetion free. So ... you probably can copy whole screen without beam colliding copy routine ...ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…
... only 16k-256bytes are copied to avoid overwriting the copy ... code is copied to screen zone (the program tries to find an invisible ... spot on screen ie: ink ... =paper)
Then jump to that small ...ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... 1024MAK;874538"]Because resistors R1 to R8 "isolate" the data ... available memory, when not writing to screen, since it will be ... overloading with screen address range, although ULA, ... stick to read only, and not be used while writing to screen.Why did the Commodore 64 lose to the Spectrum in the UK?The Commodore 64 was released in the UK in 1983. As we all know, it was a great machine from a US company with a much larger financial backing than t…
... few speccy owners went on to own amiga's after.. you ... fast. wireframe / isometric again due to 64 hardware , speed wise on ... as it's directly writing to screen. in aspects that continued with ...Any love for Fred?What better time than international Fred appreciation day to share stories of and play Fred?
... by the
option to return to screen 1 or redefine the maze ...Any love for Fred?What better time than international Fred appreciation day to share stories of and play Fred?
... by the
option to return to screen 1 or redefine the maze ...ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... ; Critical set of instructions to force required bus addr pattern ... ] are in reverse order on screen.
And ... side |T2-T1|, relative to screen vertical [color="green"]green markers ... simulation Vectors. Trying to give a chance to WinCupl Software, ...
