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fixed point mathsI came across this site which is quite interesting [URL="http://z80-heaven.wikidot.com/advanced-math#toc18"]http://z80-heaven.wikidot.com/advanced-ma…
... multipliers which can do a multiply in a single clock tick ... -
fixed point mathsI came across this site which is quite interesting [URL="http://z80-heaven.wikidot.com/advanced-math#toc18"]http://z80-heaven.wikidot.com/advanced-ma…
... advantage it is to cache multiply / divide results on a z80 ... the difference in time between multiply and divide reduces, which may ... -
The REAL cost of modern Video GamesAccording to Yahoo... [img]https://s2.yimg.com/bt/api/res/1.2/y34aqfDLaHi6.dOQKd_yMA--/YXBwaWQ9eW5ld3M7cT04NQ--/http://l.yimg.com/os/publish-images/f…
[QUOTE=zx1;788447]So GTA V cost ?18.55 to make?:grin:[/QUOTE]
Multiply that by the 20+ million sales and you might be a little closer to the mark. -
ZX-Assembler file handling concept[QUOTE=clausjahn;777075]Dear readers, At this time, it's a good time to ask you, the future users, how to implement the file usage. Let's suggest so…
... the program only needs to multiply and add floats, it's ... also contain common functions like "multiply these two ints", "convert this ... libraries that use, eg, the "multiply two ints" subroutine will use ... -
ZX-Assembler file handling concept[QUOTE=clausjahn;777075]Dear readers, At this time, it's a good time to ask you, the future users, how to implement the file usage. Let's suggest so…
... the program only needs to multiply and add floats, it's ... also contain common functions like "multiply these two ints", "convert this ... libraries that use, eg, the "multiply two ints" subroutine will use ... -
Snowfall effectHow do you go about creating a snowfall effect like the one in Yeti? Now don't laugh, I'm currently printing 32 UDG's of dots OVER the top of my gam…
... ; divide x by 8 and multiply by 32,
rlca ; net ... calculation: multiply by 4.
and 224 ... -
Snowfall effectHow do you go about creating a snowfall effect like the one in Yeti? Now don't laugh, I'm currently printing 32 UDG's of dots OVER the top of my gam…
... ; divide x by 8 and multiply by 32,
rlca ; net ... calculation: multiply by 4.
and 224 ... -
Snowfall effectHow do you go about creating a snowfall effect like the one in Yeti? Now don't laugh, I'm currently printing 32 UDG's of dots OVER the top of my gam…
... ; divide x by 8 and multiply by 32,
rlca ; net ... calculation: multiply by 4.
and 224 ... -
Help for beginner with z80Hi chaps, I'm reasonably new with z80, but had a fair amount of experience with 68000, so decided to give a few things a go. One little thing I'm t…
... ASCII value, take away 32, multiply by 8 (bytes per char ... -
Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... ,b ; x position.
rrca ; multiply by 32.
rrca
rrca ; multiply by 32.
rrca
Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... ,b ; x position.
rrca ; multiply by 32.
rrca
rrca ; multiply by 32.
rrca
Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... ,b ; x position.
rrca ; multiply by 32.
rrca
rrca ; multiply by 32.
rrca
Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... ,b ; x position.
rrca ; multiply by 32.
rrca
rrca ; multiply by 32.
rrca
More SpecBAS funHere's a neat little effect I lifted from a thread about displaylists and stuff from an Amiga forum - although SpecBAS has no hardware to assist, it …
... y coordinate (a+offy) and multiply that by the width of ...Floating Point Package Math48<br>I came across a neat little floating point package for the z80 and I'm adapting it now to work with z88dk and sdcc. There is an interesting…
... your calculator.
To multiply by ten you do the ...Multiplying. Again.Is there a faster way of hl=a*32 than doing add hl,hl 6 times?<div><br></div><div>I get the feeling that working with 8 bit registers for most of it …
Five times. Dammit. I can't even count, let alone multiply.Multiplying. Again.Is there a faster way of hl=a*32 than doing add hl,hl 6 times?<div><br></div><div>I get the feeling that working with 8 bit registers for most of it …
Multiplying. Again.Is there a faster way of hl=a*32 than doing add hl,hl 6 times?<div><br></div><div>I get the feeling that working with 8 bit registers for most of it …
... it should work with any multiply by power of 2.Short & Amusing (was: Soduko Solver)Looking for some ideas for simple but fun programs, I came across this brute force soduko solver which might amuse: [code] // zcc +zx -vn -startu…
... . I retried the fast integer multiply library on the above program ...SpecBAS 0.844 releasedHi all - it's been a while... Having some unexpected extra time off work, I've been able to get some work done on SpecBAS and it's now a bit more …
... ","Or","Not","Average","Maximum","minimum","Multiply" BASE 0: LET pozx,pozy ...Game development guidesHello all, I want to get into game development for the ZX Spectrum and would like to know where I can find some helpful guides. I've looked around t…
... 0 and 63 you can multiply by 4 without overflowing the ...Beepola v1.08 AvailableA new version of Beepoa, v1.08, is now available for download from:- [url]http://freestuff.grok.co.uk/beepola/[/url] (1.76MB zipped exe, no installe…
... -modify the two-byte tempo (multiply by about 75%) at the ...RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... bytes, etc... to eliminate the multiply that calculates the address of ...Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... ,for stuff like this , can multiply up significantly on small works ...Fixed point math lib?Is there a liberally licensed fixed point math lib for z80 somewhere? When searching, I expected to find a bunch of GPL'd ones and perhaps one or two…
... do if you want to multiply the result by another 16 ...Fixed point math lib?Is there a liberally licensed fixed point math lib for z80 somewhere? When searching, I expected to find a bunch of GPL'd ones and perhaps one or two…
... on that page. His 32x32 multiply into 64 bit result is ... rom actually contains such a multiply:
http://z88dk.cvs ...Fixed point math lib?Is there a liberally licensed fixed point math lib for z80 somewhere? When searching, I expected to find a bunch of GPL'd ones and perhaps one or two…
... it only allows you to multiply numbers from -127 to +127 ... more generic.
;******************************************************
; multiply 'e' (signed) by 'c' (unsigned ...Fixed point math lib?Is there a liberally licensed fixed point math lib for z80 somewhere? When searching, I expected to find a bunch of GPL'd ones and perhaps one or two…
Ah, yes, I've seen a similar approach in matrix algebra - you invert (1/n) and then multiply. And doing the 1/n with a table saves a lot of time.Fixed point math lib?Is there a liberally licensed fixed point math lib for z80 somewhere? When searching, I expected to find a bunch of GPL'd ones and perhaps one or two…
... faster than an unrolled 8x8 multiply on the z80 and should ... on average since an unrolled multiply can do leading zero bit ...
