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Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... .
Something like a vertical scheme like the one you ... to account why is Sinclair BASIC rather slow?
Please ... -
Smooth (vertical) scrolling on ZX SpectrumI was just thinking about this. You know, you have systems like Atari 2600 or Sega SG-1000 that have no hardware scroll, but they have games that sti…
... a 128 and halve the vertical resolution you can do it ... . But then a 2-pixel scroll at 50Hz would be far ... -
Smooth (vertical) scrolling on ZX SpectrumI was just thinking about this. You know, you have systems like Atari 2600 or Sega SG-1000 that have no hardware scroll, but they have games that sti…
... easy to achieve a smooth vertical scroll simply by generating each scanline ... SG1000, this only appears to scroll at the character level. It ... -
Smooth (vertical) scrolling on ZX SpectrumI was just thinking about this. You know, you have systems like Atari 2600 or Sega SG-1000 that have no hardware scroll, but they have games that sti…
... a 128 and halve the vertical resolution you can do it ... . But then a 2-pixel scroll at 50Hz would be far ... -
Flip Screen vs ScrollingWhich do you prefer? I've always liked flip screen games but I had a C64(spit) owning friend who hated them with a passion.
... scrolling. Quite why it didnt scroll smoothly horizontally like it did ... CPU intensive than vertical scrolling.
To scroll 1 pixel vertically ... pixels (32 bytes). To scroll 1 pixel horizontally you need ... the display you want to scroll and OR in 192 ... -
A type-in BASIC platformer that's worth a goWorking on some type-ins for TTFn, from Games Computing, I came across [url=http://www.users.globalnet.co.uk/~jg27paw4/pourri/patpostman.zip]The Adve…
... for BASIC and you even get a rudimentary character-level "vertical scrolling ... got it by reading a BASIC listing in one of those ... -
A type-in BASIC platformer that's worth a goWorking on some type-ins for TTFn, from Games Computing, I came across [url=http://www.users.globalnet.co.uk/~jg27paw4/pourri/patpostman.zip]The Adve…
... for BASIC and you even get a rudimentary character-level "vertical scrolling ... got it by reading a BASIC listing in one of those ... 'm quite fond of these BASIC platformers, I've been playing ... -
The Commodore 64xI was reading my Daily Mail this morning when I espied an announcement that the Commodore 64 was back with Blu-ray drive and other accoutrements. [u…
... its unique features like HW scroll and SID but soon I ... course then that nonsense called BASIC V2 - why on Earth they ... put such an obsolete basic into a 1982 computer? Saving ... -
Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... =30618]"storing machine code in BASIC"[/thread] from last August).
BASIC"/regular BASIC timing comparison by writing a short routine to scroll down ... -
That thing on ZX_Beccy's shelfI am sure I am not the only one who thinks ZX_Beccy has the most amazing Sinclair collection but has anyone else been curious about that white spectr…
... some of the prototypes have BASIC keywords/commands that don't ... on the final version, like SCROLL, FORE, UNPLOT, BRTR, DLL, etc ... -
That thing on ZX_Beccy's shelfI am sure I am not the only one who thinks ZX_Beccy has the most amazing Sinclair collection but has anyone else been curious about that white spectr…
... some of the prototypes have BASIC keywords/commands that don't ... on the final version, like SCROLL, FORE, UNPLOT, BRTR, DLL, etc ... -
That thing on ZX_Beccy's shelfI am sure I am not the only one who thinks ZX_Beccy has the most amazing Sinclair collection but has anyone else been curious about that white spectr…
Well SCROLL and UNPLOT were on the ZX81, FORE is presumably what would be INK (as neither that or PAPER are present). I guess the updates to Sinclair Basic hadn't been finalised when these were being mocked up. -
The thread of belly laughsGo on folkes I could do with a laugh. Post up the some of the funnyest (or down right silliest) things you know, be it jokes, stories, images, youtub…
... even worked out how to scroll the big text, so do ... second ever program in spectrum basic. In any case Bob was ... -
Most colourful games?I just played [url=http://www.worldofspectrum.org/infoseekid.cgi?id=0001563]Earth Shaker[/url] and am fairly dazzled by the overload use of colour (t…
... images at 45?, so things scroll one character left and one ... that's wrong for a vertical shmup there, like the crappy ... -
Speccy screen display novice: What am I missing?[deleted]
... may be either border or vertical retrace.
Then the ... the color of border in Basic are only an invention of ... Basic creators. It's the Basic code that treats ... -
machine code loadercan someone have a look at this loader and break down what its actually doing and also how i can stop it from executing the 2 loads of headerless blo…
... them in after via my basic loader?[/QUOTE]
As ... end of the system variables upwards. A BASIC loader can't be ... printer buffer - then a simple BASIC USR call would load the ... -
BEEPER music contest 2011Yo! ;) Some small info. :) ______________________________________________ BEEPER music compo (ZX Spectrum 48K chiptune). OK. The BEEPER Party is …
... real-time while the meeting (BASIC of course ;-) ),
[url]http ... BEEPER music and loooong boring scroll written by attenders:
Factor6 ... -
Tile based graphics and scrolling thingy...Here's my best attempt so far at a tile based rendering and scrolling routine. It draws in 22 8*8 graphics tiles along the top of the screen (junk i…
... ways and the routine will scroll up or down depending simply ... for simplicity's sake. A vertical scrolling Xevious type game will ... -
SP1 library questionsI'm working on my first game. I've not written a game since the late 1980s and that was a text based multiuser dungeon for BBC Micros with econet... …
... attribute detection as in many Basic programs. You can investigate the ... ;view=markup"]spectrum.h[/URL]. Scroll down to the "display functions ... -
Dead Spectrum SocietySo I'm getting back into real Sinclair computers rather than emulators. During the summer months I was lucky enough to buy a working ZX81 and was giv…
... a pattern consisting in 32 vertical stripes of 1 pixel width ... a particular pattern, showing many vertical (red or black) stripes in ... />
I wrote a quick BASIC program to POKE all screen ... -
SuperTape Version 1.2 Scheme ?Hi folks, As mentioned in another thread, I came across a tape (on-line most likely) called SuperTape Version 1.2. I think it might be a multi-plat…
... again after you let the basic scroll, in case it doesn't ... -
SuperTape Version 1.2 Scheme ?Hi folks, As mentioned in another thread, I came across a tape (on-line most likely) called SuperTape Version 1.2. I think it might be a multi-plat…
... again after you let the basic scroll, in case it doesn't ... -
Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…
... if you were using hardware scroll.
Additional features added ... might be hardware scroll.
Doing your scroll is not difficult ... , however, doing a wrap is. Vertical scroll is particularly difficult as it ... -
Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…
... if you were using hardware scroll.
Additional ... be hardware scroll.
Doing your scroll is not ... however, doing a wrap is. Vertical scroll is particularly difficult as it ... new software, like hw scroll or scanlines counter interrupt so ... -
Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…
... [/url]
The scroll state are the 3 lower ... not showed correctly (but the scroll in the emulator is well ... (of course without fine grain scroll).
3. The changes ... is reserved for vertical scroll (5b38 if horizontal and vertical scroll are used at ... -
Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…
For understand how hardware scroll works, I have prepared a BASIC program:
Load with Basic SE (easy typing)
[url ... -
Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…
... [/url]
The scroll state are the 3 lower ... not showed correctly (but the scroll in the emulator is well ... (of course without fine grain scroll).
3. The changes ... is reserved for vertical scroll (5b38 if horizontal and vertical scroll are used at ... -
Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…
... upgrades for that PCB: horizontal/vertical scroll, raster interrupts, non-blink video ... -
Milk, No SugarA few people were asking about this vertical shooter at Replay, and I'm not sure if TMR found time to load up the WIP demo over the course of the wee…
... ! I did a sort of vertical Uridium for a Your Sinclair ... the day, even composing some (basic) AY music for it. There ... -
The SAM CoupeDoes anyone own one of these? I remember being jealous of a friend who bought one of these machines which had a disk that made the system compatible …
... very fine machine with excellent BASIC which lacks only a ... /> The fact, it has BASIC in ROM, made the SAM ... a disc, and the BASIC dialects that came with the ... wirh a simple scroll command. Atari ST BASIC was not very ... (I have now FaST BASIC-Module and STOS). So ...
