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using the ROM's FP calculatorIs it possible to use the ROM's FP calculator to evaluate any FP expression in a single sequence of commands without breaking out to stack some other…
... use the ROM's FP calculator to evaluate any FP expression in a ... -
Back to BASIC[U][B]Archaeology guide to programs compiled used MCODERII.d[/B][/U] After various people have been talking about "Frank'n'stein" I decided to finis…
... key after each statement of BASIC, so the compiler will insert ... each part of the original BASIC line):
[B]BORDER ... CLS and then gets ZX BASIC to interpret it
CALL ... value we use the ZX FP calculator
RST 40 ; 28054 239 ... -
Best mag to learn programming Machine CodeDear all, Back in the day, I was a Crash reader; I loved it. However, not having the money to buy the other big two mags on offer in the UK, I was n…
... particularly recommend the Machine Code Calculator series, which gives detailed instructions ... ; use of the ROM's FP calculator.
These three machine ... -Aug'85, a mixture of BASIC & m/c). -
Graph Plothi! please, help with code: [PHP]For x=-100 To 100 For y=-100 To 100 If (x/2-25)*(x/2-25)+(y-50)*(y-50)<200 Or (x/2+25)*(x/2+25)+(y-50)*(y-50)<200 th…
... , so I wrote a quicker BASIC version then an assembler version ... quickly by not using the FP calculator but I expect that it ... -
Graph Plothi! please, help with code: [PHP]For x=-100 To 100 For y=-100 To 100 If (x/2-25)*(x/2-25)+(y-50)*(y-50)<200 Or (x/2+25)*(x/2+25)+(y-50)*(y-50)<200 th…
... converting the BASIC to assembler by using the FP calculator as it ... has functions directly equivalent to the BASIC ... the same picture as the FP calculator version.
... zero; whereas in the BASIC and FP versions fractions will be ... -
Unravelling the Spectrum Floating Point Number formatHi Guys, In my head I pretty much understand how the Spectrum's 5 byte FP number format works. The first byte is the signed exponent and the follow…
... comp/mccalc.zip]Machine Code Calculator[/url] articles, which ... 've also included a BASIC program which does the conversions ... 1000 : decimal to FP
* RUN 2000 : FP to decimal
... * RUN 3000 : decimal to FP & calculator "stack ... -
About U.N.SquadronHello there! I have a question, I have the cassete of the game U.N.Squadron from US Gold, and when I play it on my Speccy it has a bug: when I am goi…
... screen, the one with Loader, Calculator, Basic, etc...I asked some of ... -
Keyboard Problem?Hey all. I'm Dave I'm in my last year of college before I go to University. I'm in the UK. I got a +2 a while back when I first told my mum and dad…
... with the 4 selections of calculator, basic 128 etc etc etc) and ... -
using the ROM's FP calculatorIs it possible to use the ROM's FP calculator to evaluate any FP expression in a single sequence of commands without breaking out to stack some other…
... use the ROM's FP calculator to evaluate any FP expression in a ... is only used by PRINT-FP
You can have ... -
using the ROM's FP calculatorIs it possible to use the ROM's FP calculator to evaluate any FP expression in a single sequence of commands without breaking out to stack some other…
... use the ROM's FP calculator to evaluate any FP expression in a ... -
TRD, TZX, TAP - does it really matter for you, if it is interesting game?Just wondering, if there is really a massive amount of die-hard fans of tape, as it is rumored...
... 128k menu like tape loader, calculator basic 128 and in the bottom ... -
Game from an ancient old calculatorOne for the mathematicians, this (possibly). Bear with me on this one... Many, many years ago, when I was a nipper, I had a Casio calculator which …
... a Casio calculator which was also equipped with three (*shockingly* basic) games ... the original game on the calculator, it was always possible to ... -
A BASIC compiler projectHi, I started my own BASIC compiler for the ZX Spectrum (and Z80 machines) 3 months ago. It's still in ALPHA stage (when it is mature, I will write …
... br /> I started my own BASIC compiler for the ZX Spectrum ... It also has a tiny (basic) TZX library (to save ... moment), and a minimalistic BASIC tokenizer to generate ZX Spectrum ... .tzx file with a basic loader which loads an ... . for calling the ROM FP-CALC etc, as I ... -
Need a pointer to using the spectrum calculator from MCHi all, Can anyone point me to a good resource on using the spectrum calculator stack from machine code? I need to work out the number of seconds f…
... resource on using the spectrum calculator stack from machine code?
BASIC book example -
[quote ... explain how to use the calculator (to me anyway!)
saving part of a BASIC programHere's a short routine to save part of a BASIC program. The idea is that it can be merged into a program and then used to save sub-routines, etc. to …
... to save part of a BASIC program. The idea is that ...AND,XOR,OR,BIT,RES,SET,CPL,NEG,RLC,RRC,SLA,SRL,RL, RR,SRA for BASICAs this was drifting away from the original INKEY$ thread I thought that I'd create a new one. So here's a routine to provide all of the above mentio…
... mentioned operations from BASIC. Syntax is explained ... STAKA: equ $2d28 ;to calculator stack: A
FPTOBC ... : equ $2da2 ;from calculator stack: BC
FPTOA: ... equ $2dd5 ;from calculator stack: A
ERRORA ...How to use Spectaculator 7.01 for BASIC ?It does not work for me. Problems with the keyboard - in 48 and 128 Mode. Nor can I move downwards with the "Down-Arrow" from: 128 TAPE LOADER 128 BA…
... LOADER
128 BASIC
CALCULATOR
48 BASIC
My prime idea ... use my registered Spectaculator for BASIC programming, but it seems to ...So it occurred to me; "Why bother with going into 48K BASIC when you can just....wrap the machine code calls inside a 'RST #28;DEFW addr:RET'?" Of course, you DO need a small M/C routine to do that, and ta-daaa, here it is: [cod…
... ; hide the M/C from BASIC
Call48 RST #28 ; ... 48-BASIC environment
DEFW #2DA2 ; unstack BC from the calculator ... and here's a tiny BASIC program to poke it into ... M/C routine on the calculator stack before calling my ' ...Random Numbers, USR Return Values & Timing BASICI've been trying out Jon Ritman's random number routine, published in Your Sinclair Aug'87. Apart from a timing comparison I also did a frequency ana…
... 4 of the "Machine Code Calculator" series in ZX Computing Jul ... instances the required return to BASIC with a decimal fraction between ... return that value to the BASIC program.
As well ...
Here's the BASIC timing routine which I use ..."ZX80 Brain" RPN CalculatorIt is at times like [url=https://www.worldofspectrum.org/forums/discussion/54176/depression]when threads such as this are posted[/url] that I get the…
... bit ambitious to make a calculator with all the scientific functions ... of Starfire, the early, mostly BASIC-based release from Virgin Games ... made some routines work in BASIC that I could never have ... redefined character sets on the BASIC editor, I've had to ...How to return to basic properly from ASMI am messing around with a fast stack copying routine. But I am getting "A: Invalid argument" error when I later return to basic. I know you h…
... when I later return to basic.
I know you ... IY register before returning to basic but my code at the ... as IY when returning to basic. I think one of the ... registers is used for the calculator stack or something? I'm ...Floating point representationI'm planning on picking up the [url=http://matt.west.co.tt/category/spectrum/openzxrom/]OpenZXRom[/url] project from where I left off a few months ba…
... the time) but I suppose Basic programs work with integers much ... some mc programs using the calculator would have constructed integers directly ... /> Yep, sure... all of my calculator routines will at least have ... as long as FP-TO-A and FP-TO-BC behave correctly ...Benchmark timeWell, the BASIC benchmark posted in Creative Computing back in the 80s came up as a topic on the AtariAge forums. The article is available online an…
... maybe you got Atari-like FP code.
... own language; this allows fp calculcations to be written very ... the basic program and data). Perhaps more since the calculator code ... secondary things -- subroutine linking, fp optimizations (recognizing x^y where ...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 marker byte for a FP number, in the same way ... number is held in a BASIC listing. The 0 is the ... the 5 bytes of the FP number. The 41 is a ...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…
... ; floating point number to calculator stack
call fp_to_bc ... br /> and %11000000 ; of BASIC?
jr z, renum_line_7 ; ... ; address of character after fp to HL
push ... unstack address of character after fp
ret ; end ...Basic BASIC help needed RNDHi all, I have recently re-discovered an old program I wrote in the early 90s which would do generate random lottery numbers. I know little now, an…
... held in a smallint or FP form.
In this ...
ld b,$1D ;B= calculator code for 'VAL'
ld b,$09 ;B= calculator code for 'x
