-
Space Harrier new loading screenHi, The original screen: [IMG]https://dl.dropboxusercontent.com/u/2616449/spectrum/SpaceHarrier.png[/IMG] and my new version: [IMG]https://dl.dro…
... little nearer the brightness you might be used to from the cassette box ... , and imported the title from ... somewhere it doesn't obscure the best bits of the artwork.
[URL ... -
Edge Connector InformationHi Everyone, Hope I'm posting in the correct forum. I've recently been playing with an Arduino and got to thinking it would be fab if I could do so…
... lines output from the CPU tell the rest of the system what the Z80 CPU ... byte to it. Not only this, but it holds a copy of the ... data byte on it's output pins ... transistor(s). Now depending on the device used, you can output 10mA ... -
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…
... 'm one of the last to build mine despite being one of the first to ... /> [*]Soldering the tab of the switch mode regulator and the inductor where fiddly bits, I ... had no luck putting a pool of ... -
Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…
... on +2A/B/3? The machine is built so ... you cannot override the data on the data bus with ... />
Also, if the lower data byte of the data bus contains #FE ... that all upper bits are 1 otherwise the IN will ... AT LEAST 9 BITS of the address to be sure the read is ... -
Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…
... to do the decoding (bits of the printed circuit under the chip loop ... are used.
There are many variations of Kempston compatible ... use all the gates in the chip used as the decoder logic.< ... : CPO
IC's used: two 74LS366
Modes: ... -
Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…
... used for inputting the lower 5 bits
of the keyboard matrix. It is also the ... input for the ... Spectrum keys when used with the left-hand side of the keyboard, as bit ... -
Fuse 1.1.1 releasedOn behalf of the Fuse team, I am pleased to announce the 1.1.1 release of Fuse. The changes from the recent 1.1.0 are relatively minor, mostly correc…
... =aowen;767343]The trick is that the ULAplus ports have the same contention ... .
If the top 2 bits of the chosen ports were 01 ... the specs doesn't mention what address lines should be used ... emulator which doesn't contend the ULA+ ports...
... -
Fuse 1.1.1 releasedOn behalf of the Fuse team, I am pleased to announce the 1.1.1 release of Fuse. The changes from the recent 1.1.0 are relatively minor, mostly correc…
... that.
If the top 2 bits of the chosen ports were 01 ... should be used for port decoding.[/quote]
The ports were ... board and because Woody used the 48 timings instead of the Timex timings for ... -
LOADing 128k's worth of data???Just getting to grips with the concept of the 128's 'bank switching' set up, but how can you load the stuff into memory from tape (or TAP file)? Do…
... change banks between the last byte of one bank and the first byte of another bank in ... 's really loading scattered chunks of data here and there... -
So shooting 360 degrees?...[I]How do I go about having - for example - a cannon in the middle of the screen, that can shoot in any direction towards the player?[/I] Well, I do…
... , where the upper byte is the number of whole pixels; the lower byte is the fractional part ... -ordinates. And just take the top 8-bits of the co-ordinates for plotting ... , 1/256th of a pixel movement) - the subtraction carries into the upper byte, and ... -
FZX ScrollI wrote a routine to scroll message in ZX Spectrum screen, using [URL="http://www.worldofspectrum.org/forums/showthread.php?t=44088"]FZX[/URL] fonts.…
... the width of the last printed character and scrolls the screen that number of pixels to the ... to a buffer with 24 bits of width. The character is then scrolled ... bits are left in the buffer. I avoided to scroll out all bits of ... -
Skool Daze & Back To Skool discussionFollowing my video of Back To Skool ( [url]http://youtu.be/4K2ZUkTOT0g[/url] ) I just wanted to see if these two games are still fondly remembered b…
... of the ROM and the screen would be loaded again. The last byte ... read in self-modified the code so ... back onto the present value of IX. The screen then ... /> Just noticed the picture of the teacher on the original inlay cover looks ... -
Skool Daze & Back To Skool discussionFollowing my video of Back To Skool ( [url]http://youtu.be/4K2ZUkTOT0g[/url] ) I just wanted to see if these two games are still fondly remembered b…
... so much a lack of understanding the code, as knowing where ... copy of the ROM and the screen would be loaded again. The last byte read ... in self-modified the code so it ... 4000 back onto the present value of IX. The screen then loads ... -
Creating a linked list in Z80[FONT=Calibri][SIZE=3]I am using a circular buffer to store tiles to be displayed on the screen. Tiles only appear for a set period of time, so when …
... allocate a region of memory that you'll used to hold ... s start address) and the address of the last tile in the list. You don ... i]could[/i] store the address of the last tile in a variable elsewhere ... ). If you've saved the address of the last tile, just read that ... -
One game which made you change computersWas there any game (or games) that made you think 'thats it, the times up with the Speccy, time to move on' and get an Amiga or ST back in the late 8…
... 't think I ever used my Speccy as a ... me know the speccy had become something of the past, was ... became really expensive (one of the last SNES on sale in ... and lacking when compared to the Saturn.
... was poorly informed in the pre-internet days?). to ... -
Non-Ferranti ULA 6C001E-7?Hello! I don't like Iss2 boards that much but after revising one Speccy like that for a friend, the results were so positive that I decided to have …
... from the Philippines.
The ULA5C112E-3 is the last of the 5C series before the ... to 8324. They were used in some of the last of the Issue 2 machines before ... /> The ULA6C001E-7 was used for the last 48K Spectrums, both the Pluses and the last rubber ... -
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…
... sprites anywhere in the 64x48 space without much of a hassle. I ... 've coded the ZX81 and ... much better approaches than the one I've used in my buffer ... and pop and be used to get the pattern byte more directly.
Anyone remember this?Early evening weekdays I think in the UK [URL]https://www.youtube.com/watch?v=YdFN6agkNnQ[/URL]
Bits of the original vid are very familiar and reminds me of another show I used to watch.
[youtube]TAWrQgE0hFg[/youtube]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 …
... compiler. My first test for the zx spectrum target:
... code) + 365 (initialized data) = 9389 byte rom image
compressed ... ) + 189 (compressed data) = 9265 byte rom image.
Even ... like it will be used most of the time when rom images ...Chuckie Egg 2 PokesOkay, so, I fancy a crack at Chuckie Egg 2 before FA Cup MotD comes on. Loaded it up, and tried the Multiface poke, but the one that crops up EVERYW…
... you load the game because the game checks the contents of the final byte of ram when ... you infinite lives by NOPing the DEC (HL) instruction for ... =SimonLCFC;815199]Bizarre. This is the version I have...
... A'n'F, and the re-release used the 2nd version?The Great Escape disassemblyHi, Over the past few months I've been steadily chipping away at reverse engineering Denton Designs' classic 48K title, The Great Escape. I'm now a…
... the day job and two young kids (and moving house last year ... ) it's been hard to dedicate the long stretches of ... .
[QUOTE]Regarding the inaccessible bits of the map I doubt that this ...Features you wish your computer hadI wish my computer has a 'Stop F*cking About' button. So that what ever the computer feels it needs to do when it holds me up with a spinning cursor …
... is the 'UNDO' function of Windows, and it, er, undoes the last function ... you should get a menu of the last ten things Windows did, and ... By comparison, the Spectrum was fit for the works of Vincent Van ... fix that, as I used an external cassette recorder.
Some Spectrum Adventure ReviewsHi, HeeHee... Today I found some old short reviews I did of some Spectrum Adventures for contributions to "SynTax" disk adventure magazine in the 19…
... four
components for construction of The Machine Of Total Universal
Control ... finger eg: A (AGAIN) repeats the last command
typed.
to highlight bits of the text, which is nice, and ...My partial disenchantmente with PS4I've had a PS4 since christmas... My wife gave it to me. I loved the PS3, felt the machine still had a few good games to put out (contrary to PS2, t…
... that alien boss (the big boss with loads of small aliens knocking ... /> I didn't find the first area of NG+ too bad to ... be honest. I came out of the last boss fighet with 400,000 ... the Cleric Boss on my first try and so could have used ...Your latest gaming purchase.Okay, so we've got an, "I am currently playing......" thread, but what I wanna know is what you've just gone and bought y'self. If you're like me, y…
I almost bough the Komplete Edition of the last MK game yesterday, and ... new as adversed to used online. The game shops here must ... do you buy a used game of the year/complete/definitive/saga/ ... collection used, only to find ...Your latest gaming purchase.Okay, so we've got an, "I am currently playing......" thread, but what I wanna know is what you've just gone and bought y'self. If you're like me, y…
I almost bough the Komplete Edition of the last MK game yesterday, and ... new as adversed to used online. The game shops here must ... do you buy a used game of the year/complete/definitive/saga/ ... collection used, only to find ...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…
... all to do with the value that was last [i]written[/i ... the short form of OUT instruction where the programmer only specifies the lower eight bits of the ... port address. The ...Games not compatible with the 128+ & grey +2Like the +2A & +3 thread, there are a few games that do not work correctly on the original 128+ and the grey +2. Two games that I know of that wil…
... which is never overwritten. So, the I register can be pointed ... a lot of moving about in memory, so after the Speedlock ... anything by reaching the code at 23296 (0x5B00)), the following code ... 41856 (inclusive - don't forget the last byte) (A340-A380) with 253 ( ...Spectrum Screen RAM layoutHi there The spectrum screen layout is rather odd. It seems to be arranged into 3 256 byte groups. If I have an x (horizontal) coordinate (from…
... high byte. The top 2 bits have moved down three bits in the high byte. The last 3 bits ... have moved left two positions and are in the ... low byte ...Pokes needed for following games - any help? :-DHi speccynites,..I need a few special pokes if anyone can help so I can get these games longplayed on the real hardware, can any of you help??? The …
... enough to do that sort of thing you have shown ... You can poke a string of (decimal or hexadecimal) bytes into ... eg. 7FFF)
* Type the first byte of the routine (eg. 3E) and press ... steps until you've entered the last byte in the routine.
* Press ...
