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Fast LogsAnyone know of a fast ln function I can steal? The ROM function seems to be hideously slow. I wrote a look-up table dirty and less accurate sin func…
... that, and it's all calculator stack stuff; which is what you ... SE basic ROM uses the calculator better than the original sinclair ... also implement SQR as a calculator based routine using the newton ... -
Drawing 3D grids in Basic...This is probably very simple for someone who feels comfortable with Math, but it's driving me crazy... Let's say I want to draw a grid of 16 by 16 s…
... height (vstep), as a Speccy calculator quirk caused it to come ... hstep:
PLOT b,0: DRAW t-b,height:
LET ... l:
PLOT xl,y: DRAW xr,0: LET xl=xl ... -
Fast LogsAnyone know of a fast ln function I can steal? The ROM function seems to be hideously slow. I wrote a look-up table dirty and less accurate sin func…
... SE basic ROM uses the calculator better than the original sinclair ... The faster and more accurate calculator routines used in the SE ... to the required number and stack it.
For ... the Newton Raphson square root calculator routine based on the Jupiter ... -
Best way to organise a multi screen game?Hi All, Does anybody know ay good ways to organise large multi screen game? Or any links to useful texts on the matter? In my previous single scr…
... /> Ideally, you make your room draw code recursive, and put the ... you keep track (maintain a stack) of where you are in ... -
enJine: a fast tilemap enginetile engine based on excellent work by Joffa Smifff. here you can download first tech demo. [url=http://ketmar.no-ip.org/tmp/enJine.tap]Get It Now![…
... upper part of border). then draw map (ray draws the screen ... we have ~14000 ticks to draw sprites and alot of time ... for map blitting due to stack usage, and there is no ... -
Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
... a socket [I]and[/I] stack the SRAM on top of ... /> Btw. have you measured power draw without any peripherals (for all ... -
Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
... a socket [I]and[/I] stack the SRAM on top of ... ]Btw. have you measured power draw without any peripherals (for all ... -
Frank N SteinThis one > [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0001849[/url] Always seems to crash about level 7 (maybe a bit more) or so with an …
It's the stack pointer which is causing the ... the spare space between the calculator and machine stacks. Due to ... two stacks, and eventually the stack pointer gets pushed down into ... -
Frank N SteinThis one > [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0001849[/url] Always seems to crash about level 7 (maybe a bit more) or so with an …
... . In normal play only the "stack reset" patch in [url=http ... 25 timing problem) with the "stack reset" patch on its own ... free space between the calculator stack & machine stack and can cause new ... -
Frank N SteinThis is an improved bugfix for [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0001849"]Frank N Stein[/URL] as discussed recently in [URL="htt…
... . In normal play only the "stack reset" patch in [url=http ... 25 timing problem) with the "stack reset" patch on its own ... free space between the calculator stack & machine stack and can cause new ... -
Storing and displaying attributes...Hi Folks, I have a requirement to store and then redisplay a line of attributes from the screen. For example: 100 DIM a$(1,32) 110 LET line=10 120…
... floating point number on the calculator stack. The 14 is the precursor ... -
GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…
... it adds this to the stack of windows, so when drawing ... you work in an reverse stack order. that way you only ... you use and check *not draw* on a smaller clipping routine ... -
1p's and 2p's...why are they still in circulation? just beyond pointless now take up too much space, cashiers fumbling around to give exact change is long...they on…
... :) the one with the sliding draw I used to play as ... those things, just a big stack of 1 and 2p's ... -
Operator ANDHi I'm trying to write some very simple game in ZX Basic, but I guess I've forgot most of it because I can't understand why simple IF....THEN sequen…
... the result twice on the calculator stack. It's sorted in the ... -
List of existing games that needs a port to zx spectrumPlease post here the games that exist in other platform(s) but does not exist in speccy. Please keep in mind this is not a to-do list, so don't hesti…
... , precisely because the Sinclair BASIC calculator stack just isn't fast enough ... -
List of existing games that needs a port to zx spectrumPlease post here the games that exist in other platform(s) but does not exist in speccy. Please keep in mind this is not a to-do list, so don't hesti…
... , precisely because the Sinclair BASIC calculator stack just isn't fast enough ... -
Frank N SteinThis one > [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0001849[/url] Always seems to crash about level 7 (maybe a bit more) or so with an …
... :INK 4:PLOT 0,38:DRAW 255,0:PLOT 0,33 ... ,0:PLOT 0,26:DRAW 255,0:INK 7:PRINT ... decompile. I'm still getting stack underrun errors. I know it ... -
Creating a Demo with TommyGunSome of you may have caught the thread in 'new game ideas' concerning Super Stick Man (a title that WILL eventually change due to how the graphics ha…
... hl
call sp1_MoveSprPix_callee
; stack was cleaned up by subroutine ... until...
call sp1_UpdateNow ; draw screen now
[/code]
Creating a Demo with TommyGunSome of you may have caught the thread in 'new game ideas' concerning Super Stick Man (a title that WILL eventually change due to how the graphics ha…
... hl
call sp1_MoveSprPix_callee
; stack was cleaned up by subroutine ... until...
call sp1_UpdateNow ; draw screen now
[/code]
New game: WUNDERCHAR$Hi All, Finally finished my latest game: Wunderchar$. [IMG]http://i1142.photobucket.com/albums/n608/daveyboyhughes/loadingscr.gif[/IMG][IMG]http://…
... but i feel that using stack for reading pointer to screen ... quite waste. anyway, work with stack is another not so easy ... /> RE: the sp routine to draw sprites, I could only think ... the index table or the stack pointer. I found the former ...Most colourful games?I just played [url=http://www.worldofspectrum.org/infoseekid.cgi?id=0001563]Earth Shaker[/url] and am fairly dazzled by the overload use of colour (t…
New game: WUNDERCHAR$Hi All, Finally finished my latest game: Wunderchar$. [IMG]http://i1142.photobucket.com/albums/n608/daveyboyhughes/loadingscr.gif[/IMG][IMG]http://…
... /> RE: the sp routine to draw sprites, I could only think ... the index table or the stack pointer. I found the former ... already) and when you use stack to read graphics and compute ...automatic relocating of non-relocatable codeI was pondering upon the problem of changing absolute addresses used by CALL, JP, etc. when code is moved, without reassembling at the new location; …
... place.
[code]
;stack function parameters passed from BASIC ... by:
;PRINT USR stack[,arg1,arg2...,argn],addr;
calculator stack: BC
STACK: ld hl,14
Sinclair Programs uploaded.I've just uploaded a ZIP containing all the 'Sinclair Programs' programs and the instructions for each one. (Well all the ones from 'The Type Fantast…
... Ritchie - Apr'85
Super Draw - A Brahmbhatt, K Brahmbhatt - Jul ... Seccull - Jun'85
VAT Calculator - David G Price - Mar/Apr ...Structure of numeric arraysHi all, I have saved from my spectrum a numeric array using 'SAVE "array" DATA a()'. I now have the resulting file on my PC and I am trying to get …
... Toni Baker's "Machine Code Calculator" series in ZX Computing.
calculator stack.)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…
... the result in DE for draw routine
draw_tile ld ... ,(de)
ld (hl),a ; ... draw last byte here
ld (stackptr_temp),sp ; Preserve stack pointer
ld sp ...ANN: Spud v0.210Ok guys, I've made you wait long enough. Here's a new version of Spud for you to love, hate, ridicule or ignore. [URL]http://bit.ly/iAhkXY[/URL] …
... Loading Error" :-)
[*]Changing the calculator radio icons (HEX/DEC, BYTE ... be able to provide meaningful stack traces for you (much easier ...ANN: Spud v0.210Ok guys, I've made you wait long enough. Here's a new version of Spud for you to love, hate, ridicule or ignore. [URL]http://bit.ly/iAhkXY[/URL] …
... Loading Error" :-)
[*]Changing the calculator radio icons (HEX/DEC, BYTE ... be able to provide meaningful stack traces for you (much easier ...line, plot and circle in whole 256x192 displayhi! are there some way to draw lines, or whatever, in the whole 256x192 display, than just the above 256x176 part? (this is the msx1 version i made o…
... /> PUSH HL ;save pointer during draw
CALL dodraw
... br /> dodraw LD HL,(oldxy) ;draw a line between oldxy and ... go
POP HL ;clear stack
RET ;ready with ...MCODE problem...Hi Folks, Trying to write a simple machine code program to hatch the screen. So far I have the following but even this is not working - it does not…
... did wonder whether you'd draw 1 scanline at a time ... . Pushing loop counters onto the stack isn't as fast but ... the loop, or using the stack to write it, but that ...
