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Who want to remake Double Dragon?Seeing as the Speccy version was crap (see my review: [url="http://www.gamestyle.net/retro.php?article=31"]http://www.gamestyle.net/retro.php?article…
... rate, but the bottom line is you will never ever ... (since human ears aren't sensitive to such low ... frequencies) and won't sound like much more ... 5MHz cpu, about 438 T states or somewhere every 70 machine ... hard to do. I won't say impossible though.
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BASin's BASIC Editor! Suggestions?Hi all! I'm just starting BASin's BASIC editor now - and it's finalised as a resizeable window that uses the spectrum font. Kind of like Notepad mee…
... a resizeable window and doesn't force a syntax check when ... /> It's one BASIC statement per line - typing a ":" outside of quotes ... jumps to a new line, whilst just pressing return allows ... may include labels rather than line numbers too.
Any ... -
Music / BonustracksHi all, Is there a reason for some of the low quality MP3s still in the above folder? If not, could someone please upload clearer versions of the f…
... sampled something at 22khz (samples per second) like the amiga you ... (went something like 3 samples per line 525 lines for NTSC 30 ... any recording and I don't see the point of sacrificing ... we can before we can't make them anymore.
BASIC OptimisationsOk, BASin is maturing fast and now I want to add some more special "stuff". A guy called Chris requested by email that I include a REM killer, to s…
... average variable access time and line-search times (for GOTO, GOSUB ... usual line-completion times.
All times are measured in T-States ... possibly what restructuring of the line order may be needed.
InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... . The time the /INT line is held low can be ... the start of the last T state.
... routine. However, this doesn't work on the 128K machines ... M cycle takes 2 more T states than usual when ?INT ... work but it isn't the correct instruction for ...need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
... the very least 24 tstates per line, more for larger sprites, eg ... more about it, I didn't understand concretely how can I ... your loop - saves 27 tstates per line.
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done! am ... the whole procedure, but couldn't think about this one simple ...I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
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decode the opcode as per GOC's table or any ... opcode takes a number of T-States to complete. Keep a counter ...Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... to line 8, then line 16, then back to line 9, then line 17 ... copy in display line order: line 0, then line 1, then line 2, etc ... copy once and only one line will be screwed. You can ... might suck up too many T states -- you'll want to put ...Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling. As promised here is the code for the routine. It's pretty long and fairl…
... assembler allow for multiple instructions per line? That would be helpful.< ... For example, TASM has a line break character (backslash). Using it ... "virtual" lines inside an actual line. Like this:
[code ... not Cc++ doesn't mean one shouldn't use indents. For ...Long Lost ListingsWay back in the day when I still had those three issues of Sinclair Programs (which got lost in the Great House Move of three years ago DAMNDAMNDAMN)…
I didn't find a listing for 42 characters per line, but I did find 2 listings for 64 chars. per line. Both use similar PRINT AT methods which were asked for. I found them both in Popular Computing Weekly.Interrupt timingsHow long does the ULA hold /INT low for on interrupt on each of the Spectrum models?
I've got a TS2068, and would be interested in getting this number worked out for that machine, though looking at the source it seems I need to know the number of t-states before the first non-border cell first.
TBCInterrupt timingsHow long does the ULA hold /INT low for on interrupt on each of the Spectrum models?
... TC2048. In any case the T-states for the TC2068, TC2048 and ... !
The first non-border tstate is different as the ... what the effect on the T-states would be given that these ...Emulating the SamRAM on the ZX Spectrum SEGerton Lunter gave me permission to reuse the code, but so far I have not been able to get the software to work in paged RAM banks.
... possible, a production SE shouldn't include switchable CPU timing, cycles ... 1/2 T-States, size of the top & bottom border, HSYNC & ...name the game, possibly hard.you are a roller skate going round a maze, avoiding holes in the floor.
... . Given that you probably don't have access to the ID ... , one name-publisher-keyword triplet per line and I'll convert them ...When do you optimise?I was just wondering when people here optimise their code. Do they wait till it is all done or do they code a routine and then optimise that?
... code (one statement per line).
Anyway, isn't it a rule ...Speccy 128k Double Buffering.If I understand this right, you display either of the screens, and draw to the one that is not being displayed. Am i right in thinking that the Non …
... so that you don't get a shear effect.
T-States (call it 40 if ... Which would copy a single line - you'd need to repeat ... it for each line, with DE set accordingly ... second screen, and still won't compare time-wise.
...Firefox (new thoughts)Maybe more people would use Firefox if there was a version for the Speccy! [code] 10 PRINT AT 2, 2; "Press F for Firefox or I for M$IE" 20 LET K$=IN…
... really the essential requirement, isn't it?[/QUOTE]
No ... If it can't display graphics, it can't possibly be Firefox ... the RAM. It certainly wouldn't surf the net, plain text ... system, but at 32 characters per line (assuming you actually wanna read ...Firefox (new thoughts)Maybe more people would use Firefox if there was a version for the Speccy! [code] 10 PRINT AT 2, 2; "Press F for Firefox or I for M$IE" 20 LET K$=IN…
... . If it can't display graphics, it can't possibly be Firefox ... the RAM. It certainly wouldn't surf the net, plain text ... even the SAM Coupe wouldn't be able to do it ... system, but at 32 characters per line (assuming you actually wanna read ...Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …
... is it saying that each line of block must be ... in length and not ordered line by line?
Or ... crap ... but I don't know where you got that ... would be 5 bytes per line (2 pixels per byte) so it ... data stored in line order 5 bytes (top line) followed by ...2007, and still no NIC and browser for the Speccy?I've started to read all the w.o.s. threads, starting by the ones that came up with the search function, using the keywords of the topics that intere…
... can render up 64 chars per line but i would say that ... comfort
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Can't we have a Spectrum browser ... and adapting them, why can't we do it in our ...Well I'm excited, but I guess you might not beHehe this is as far as I got today, a silly little border program: [PHP] ORG 32768 PROGGY: LD C,255 ; We loo…
... !
I don't think it matters how you ... change it to do line drawing ( and changing border colours at the ...
Thing is, I don't really get some of the ... the examples and I won't use them until I ... out that didn't stop me using border and DJNZ without ...Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…
... even easier as you wouldn't even need to rip the ... press 'start game'. I won't go into the mumbo jumbo ... drawn as rows so 16 per line and approx 10 rows.
Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…
... drawn as rows so 16 per line and approx 10 rows.
t think FUSE has the ability ... on my HD but can't seem to find the listing ... />
[QUOTE=jonathan;170401]Don't give up on your programming ...Groundbreaking gamesWhich games really broke new ground? I mean the ones that actually got around the hardware limitations of the Spectrum. For example: Aquaplane - f…
... worry about the border. Changing the border half-way through ... manage to change the border at exactly the right ... (V-blank) and syncronise border with actual pos. of ... in time between interrupt and border color change - maybe ... have same count of T-states.Features that emulators don't haveI believe most of us use more than one emulator, mainly because there isn't one emulator that has all the features we need or want to use. We also kn…
... /> [QUOTE=Philip Kendall;177390]Can't this just be done with ... - I suppose breaking on zero t-states would do the trick. I ... start FUSE from the command line telling it to open the ...Database + web programming queryI was thinking of the best way to implement the a book type-ins database thingy, and I thought something along these lines would be nice and simple: …
... get started if you don't know your way around databases ... might have one type-in per line, with all the fields separated ...SpecEmu 2.4 releaseSince SpecEmu has been at 2.4 beta for as long as I can remember I think it's about time I made a proper 2.4 release for its users :) Major new feat…
... missing as the text doesn`t fit.
The Debugger is ... of memory upto 16 bytes per line. Mainly this is just useful ... , I had to edit every line by hand for 16 byte ...My little first set of routines.Hi all, I just coded a little set of routines just to draw a screen on video mem and a fade out. I could have just copied the screen rendering rout…
... slight though, so don't go nuts but you ... 32 ;number of bytes per line
ldir ;draw line
call IncY ;get next line draw position, return in de ... so that IncY doesn't mess with the P ...Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…
... is still in the border (the first ~14000 t-states from an interrupt ...
