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z88dk vs. sdccI've just read this article (in Spanish) [url]http://www.cpcmania.com/index2.asp?urldest=Docs/Programming/SDCC_vs_z88dk_Comparando_tama%F1o_y_velocid…
... not have native 32-bit multiply and divide (it is emulated ... -
DIVIDE 2k11hello, just short link - for Your info (cpld, 4 layers, rohs, cpld code for future development for clones..) [url]http://lotharek.pl/product.php?…
... ought to do the Multiply (DivIDE + Spectranet = Multiply :-))
Actually, for ... -
ISO-Copy - Individual Software revisitedHi folks In another thread about Supertape: [url]http://www.worldofspectrum.org/forums/showthread.php?t=36203[/url] ... we touched on ISO-Copy by th…
... we're doing, we could multiply our timings calculations for the ... -
Help needed... RND in machine codeI have been battling away trying to convert a simple BASIC routine (below) to machine code, but to no avail. The routine is used to fire 2 bullets a…
... $04 ;4
defb $04 ;multiply (RND*4)
defb $27 ... $05 ;5
defb $04 ;multiply (1+INT (RND*4))*5 ... -
Multiply the value of 'a' by 5Is there a way of multiplying the value of 'a' by 5? I've tried 'add a,a' etc. but only get multiples of 2...
Multiply the value of 'a' by 5Is there a way of multiplying the value of 'a' by 5? I've tried 'add a,a' etc. but only get multiples of 2...
[url=http://mdfs.net/Info/Comp/Z80/ProgTips/Multiply8]non-looping constant-speed Z80 multiply code[/url]Multiply the value of 'a' by 5Is there a way of multiplying the value of 'a' by 5? I've tried 'add a,a' etc. but only get multiples of 2...
Multiply the value of 'a' by 5Is there a way of multiplying the value of 'a' by 5? I've tried 'add a,a' etc. but only get multiples of 2...
[QUOTE=jgharston;639359][URL="http://mdfs.net/Info/Comp/Z80/ProgTips/Multiply8"]non-looping constant-speed Z80 multiply code[/URL][/QUOTE]
Those are all powers of two multiplied by a constant, not powers of 3, 5, 7 etc.Multiply the value of 'a' by 5Is there a way of multiplying the value of 'a' by 5? I've tried 'add a,a' etc. but only get multiples of 2...
... ]non-looping constant-speed Z80 multiply code[/url][/QUOTE]
multiply section on your website it ...Changing the colour Atributes at y,x (+3e BASIC)Hello there my fellow WoS'ers I am currently writing away on my +3e and I am wonder is there a way I can just effect the Paper / Ink attributes at Y…
... the attribute, you need to multiply the PAPER colour (0-7 ...assembly optimization: times tenDecimal numbers are not computer friendly :) Anyway, short of saying "sod it - I'll multiply by 8" - and another part of the program does indeed div…
I happened to multiply by 10 or divide by ten when I was displaying numbers like time or energy in a game.
It guess you basically use it when you need input/output in decimal.
But yes, it was neither often nor time critical.Work out attribute location in MCHow do I go about writing a MC routine which calculates the attribute address from a set of PRINT co-ordinates. I know you in basic you multiply the…
... left five times, this makes multiply by 32. Then you add ...Work out attribute location in MCHow do I go about writing a MC routine which calculates the attribute address from a set of PRINT co-ordinates. I know you in basic you multiply the…
... know you in basic you multiply the vertical co-ord by ...3D graphicsI would like to learn how to make 3D motion graphics for the Spectrum. Moving wire-frame shapes etc. Can anyone point me to some help/instructions/bo…
... you'll need some fast multiply and divide routines and sine ...PRINT a numerical value i.e. the scoreHow do you fo about printing a numerical value using the print routine in the ROM? For instance I have a value 0-255 and want to PRINT the result at…
... number at 1,1 and multiply by 100. 6683 is the ... the score!
call times100 ;multiply 16 bit number at bc ...PRINT a numerical value i.e. the scoreHow do you fo about printing a numerical value using the print routine in the ROM? For instance I have a value 0-255 and want to PRINT the result at…
... number at 1,1 and multiply by 100. 6683 is the ... /> [/QUOTE]
why to multiply it when you can just ...PRINT a numerical value i.e. the scoreHow do you fo about printing a numerical value using the print routine in the ROM? For instance I have a value 0-255 and want to PRINT the result at…
You don't need to multiply anything. Just print two zeroes ...PRINT a numerical value i.e. the scoreHow do you fo about printing a numerical value using the print routine in the ROM? For instance I have a value 0-255 and want to PRINT the result at…
[QUOTE=ub880d;647346]why to multiply it when you can just ...A new ZX spectrum cloneOver the past 12 months i have been developing a new spectrum clone as a hobby project to waste my spare time on. It is still not fully complete yet …
Random number from a rangeHow can I generate in assembly a random number from a range, let's say 0-21 or 0-57? There are generators which make it 0-255. By using bit masks I…
... it'd be easy to multiply that by your range, round ...Random number from a rangeHow can I generate in assembly a random number from a range, let's say 0-21 or 0-57? There are generators which make it 0-255. By using bit masks I…
The only two methods mentioned here that don't mess with the distribution are:
The repeated trials method mentioned by RTape where a random number is repeatedly generated until one is found in range. This depends on the original random number ...Random number from a rangeHow can I generate in assembly a random number from a range, let's say 0-21 or 0-57? There are generators which make it 0-255. By using bit masks I…
Well, i quite not understand why simply dont use
RND()*range.
Take 8bit(16bit) value as fixed point number in rangeRandom number from a rangeHow can I generate in assembly a random number from a range, let's say 0-21 or 0-57? There are generators which make it 0-255. By using bit masks I…
[QUOTE]Well, i quite not understand why simply dont use
RND()*range.
Take 8bit(16bit) value as fixed point number in rangeRandom number from a rangeHow can I generate in assembly a random number from a range, let's say 0-21 or 0-57? There are generators which make it 0-255. By using bit masks I…
... RND=177
I can multiply it by 44: 177*44 ... time, you can build a 'multiply by 44' routine from a ...Random number from a rangeHow can I generate in assembly a random number from a range, let's say 0-21 or 0-57? There are generators which make it 0-255. By using bit masks I…
... ;650515]you can build a 'multiply by 44' routine from a ...Random number from a rangeHow can I generate in assembly a random number from a range, let's say 0-21 or 0-57? There are generators which make it 0-255. By using bit masks I…
... drop few lowest bits and multiply by 5-6 bit value ...Spectrum30 Show in Cambridge, 08th-09th September 2012Hello Spectrum-fans, after many months of preparation we now proudly present what will be the biggest Spectrum venue of the last 20 years. We manage…
... fond of these issues could multiply the number of border crossings ...Fantasy Z80 instructions?This follows on from something catmeows said in another thread, and that I've been meaning to ask for a while. This may sound daft to people with mo…
... /> [CODE]Eight bit divide and multiply, DIV(L) and MUL(L ...Fantasy Z80 instructions?This follows on from something catmeows said in another thread, and that I've been meaning to ask for a while. This may sound daft to people with mo…
Multiply
Mirror
LD AF,nnnn
LD BC,(HL)
LD DE,(HL)
