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Math problemI'm trying to solve/model a science problem, and I thought a simple BASIC program might help me, but I struggle to write it. Goal: Given a length of…
... ]
Well, that's the point. It's the easiest one ... if you went to more decimal places, that piece of string ... -
The "best" Z80?What's the best Z80 for Spectrums? I know there are differences between brands (Nec, Zilog, Thomson) and technologies (CMOS, NMOS), so what Z80 woul…
... in Europa use still decimal comma, and point to mark thousands (120 ... -
The "best" Z80?What's the best Z80 for Spectrums? I know there are differences between brands (Nec, Zilog, Thomson) and technologies (CMOS, NMOS), so what Z80 woul…
... in Europa use still decimal comma, and point to mark thousands (120 ... -
SE BasicAfter 13 years of development I thought I'd run out of things to optimize, but it turns out I was wrong. However, I'm now running out of time to work…
... an edit line.
[*]Decimal to hexadecimal string function: ... 10
[*]Enhanced floating point library.
[*]Enter tab ... res displays.
[*]Hexadecimal to decimal function: &F.
... reports.
[*]Octal to decimal function: /7.
[*] ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
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; THE 'FLOATING-POINT TO BC' SUBROUTINE
org ...
; THE 'FLOATING-POINT TO A' SUBROUTINE
org ... /> ; THE 'PRINT A FLOATING-POINT NUMBER' SUBROUTINE
org 0x2de3 ... ld a, '.' ; decimal
inc b ; include decimal
... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... ; convert to full floating point form
ex de, ... store exponent
inc hl ; point to next byte
and ... ; range
inc hl ; point to second byte
ld ... cp '\' ; test for octal to decimal pseudo-function
jr z ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
...
; THE 'DECIMAL TO FLOATING POINT' SUBROUTINE
org ... /> cp '.' ; decimal?
jr z, decimal ; jump if so ... value
cp '.' ; decimal?
jr nz, e_format ... br /> org 0x2ccb
decimal:
rst next_char ; get ... -
FZX Driver for z88dkAn fzx library for z88dk can be downloaded [URL="https://drive.google.com/file/d/0B6XhJJ33xpOWM2hWNjAxMVkxaEk/edit?usp=sharing"]here[/URL]. The libr…
... how to align numbers on decimal points and finally two programs ... /disc at address nn and point fzx to there? That would ... -
Spectrum Utility Routines Compendium (pending)I couldn't make up my mind into which section to put this, so it's ended up here for some tenuous reason. I haven't forgotten about this. I've been …
... as a decimal
** Scrolling by 2 pixels
** Random point screen ... -
ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... and writes depends on whose point of view you take :) The ... a state machine, like a decimal number state machine eg) and ... -
PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…
... activated (rom entry point at adress #66 / (102 decimal):
[CODE ...
This is the third point, from address #0000, at which ... -
Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…
... machine that can recognize, eg, decimal numbers and the driver just ... state machine itself recognizes the decimal number and writes the digits ... /o chain.
The point is there are new messages ... -
Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…
... Because otherwise, at the point where all the possible ... code]
__stdio_scanf_sm_decimal:
; DECIMAL NUMBER STATE MACHINE
;
decimal digit?
jp nc, ... lines getting to this point. Architecture changes but I ... -
ZX Alien BreedNot sure if this has been mentioned already (I did trawl the threads but couldn't see anything :smile: ), but I've always hankered after a Speccy Ali…
... , or by simply entering the decimal value using the following program ... the sprites are by that point. If you're still up ... -
Fast and easy read/write of attributes?What are the fastest or easiest ways to check the attributes of tiles on the screen, in BASIC? It seems to be a great way of storing object info. …
... as smallints rather than floating point decimal and additions & subtractions are ... -
Fast and easy read/write of attributes?What are the fastest or easiest ways to check the attributes of tiles on the screen, in BASIC? It seems to be a great way of storing object info. …
... as smallints rather than floating point decimal and additions & subtractions are ... -
Basic program malfunctionHello. Please does anyone know why this basic program 10 LET x=0 20 LET x=x+0.1 30 print x 40 if x<>1 then goto 20 50 STOP does not properly work o…
... compare floating point numbers with equality. Floating point numbers only ...
Suppose your floating point formal only has a 32 ... /> When dealing with floating point you can never compare with ... integer that includes the first decimal place.
maths questionNB this will probably show what a tragically low level understanding of maths I have, but hey ho :-) for some reason the other day I suddenly remem…
... bother with (eg at eight decimal places if that's all ... x is to the expansion point. If you have a series ... sin (1.1) to eight decimal places than you would if ...CMWC random number generator for Z80Seeing the interest regarding the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=23070"]Xor-Shift random number generator for Z80[/URL]…
... useful if you want a decimal number. ZX Basic has a ... 32 bit, with a fixed decimal at the 16th bit. (so ... +/- 32768 with a decimal part of that of similar ... 's faster than full floating point, but less accurate.FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... (aspect ratio = 1.33, two decimal places shown) or "ff_ao_Dutch_133_256" (aspect ... be aspect ratio and point size assuming a standard ... using an effective fixed point calculation to distribute those ... , especially given the last point. I have seen additional ...FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... " (aspect ratio = 1.33, two decimal places shown) or "ff_ao_Dutch_133_256" (aspect ... should be aspect ratio and point size assuming a standard physical ...ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…
... equaled 1 to PLOT a point, otherwise move to the next ... bytes rather than floating point numbers, a floating point number in memory ... -bytes plus one byte per decimal digit of the number; so ...Startup colours of the Spectrum ROMHi Folks, Thought I would have a go at changing the startup colours of the Spectrum ROMs used within BasinC which ships with 48.rom (16384 bytes) …
... />
// Alter the table to point to a null entry for ... (Border) and $1266 is 11146 decimal.
D.Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
... isn't much point in using a floating point number as a ... step size.
Using the decimal ...Best place to start learning assembly on WOS ?So I'm pretty new at this forum but not the Speccy so my BASIC is pretty good. I can see lots of resources on WOS for doing machine code/assembly but…
... /> I will never understand the point in hex, it can only ... can't do that with decimal. Everything that is not a ...Best place to start learning assembly on WOS ?So I'm pretty new at this forum but not the Speccy so my BASIC is pretty good. I can see lots of resources on WOS for doing machine code/assembly but…
@ivanb303
Hex, decimal or binary - it'll all ... it goes straight to the point. The direct link is to ...Best place to start learning assembly on WOS ?So I'm pretty new at this forum but not the Speccy so my BASIC is pretty good. I can see lots of resources on WOS for doing machine code/assembly but…
... /> I will never understand the point in hex, it can only ... bytes is a word), whereas decimal numbers have varying lengths, from ... to the hardware itself, than decimal numbers.
I don't ...Best place to start learning assembly on WOS ?So I'm pretty new at this forum but not the Speccy so my BASIC is pretty good. I can see lots of resources on WOS for doing machine code/assembly but…
... /> I will never understand the point in hex, it can only ... bytes is a word), whereas decimal numbers have varying lengths, from ... /> I will never understand the point in hex, it can only ...
To me, the decimal representation makes some code more ...Code optimisation! 16bit number to 5 digit stringJust for interest this one, any thoughts on how to make this as fast as possible? Little optimisations to this routine or a complete reimagining? …
... /> Not exactly, though the basic point remains that operating on an ... .
BCD stores 2 decimal digits per byte. Mysterion is ... talking about a single decimal digit per byte. That will ...
