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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…
... a neat little floating point package for the z80 and I' ... keeps the floating point operands in registers. The floating point format is ... set is the primary floating point accumulator and the main ... one. Genmath requires a floating point accumulator in memory and ... -
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…
... chip in)...
Normally, floating point numbers on the Spectrum are ... be represented in the standard floating-point notation with complete accuracy.
floating-point notation immediately on sight - then ... -
BASin floating point issue...Hi Folks, I have been very happy with BASin and found it to be an excellent tool. However, in the last few days a strange error has started to occu…
... that there has been "Invalid floating point operation". This is not from ... -
BASin floating point issue...Hi Folks, Reposting here as I think I put it in the wrong section before - sorry. I have been very happy with BASin and found it to be an excellent…
... that there has been "Invalid floating point operation". This is not from ... -
Floating Point Forth (CP Software)[IMG]http://i269.photobucket.com/albums/jj79/Hairyrecords/scan0011.jpg[/IMG] I don't see Floating Point Forth by CP Software in the archive. But I …
... />
I don't see Floating Point Forth by CP Software in ... published by CP Software as Floating Point Forth.
I noticed [URL ... -
TIL: something about floating point numbersHere's something that had me scratching my head for a while until I figured out what was going on. In a BASIC program, floating point numbers are …
... />
In a BASIC program, floating point numbers are stored unsigned. (Who ... />
then the 5-byte floating point representation after the 14/0x0E ... -
Numeric arrays: floating point or integer?I've just started programming a game in Sinclair BASIC (see the thread 'UFO Defence Command' in game ideas, although I'm going to call it ZXCOM ;) ).…
... the array as integers or floating point numbers? I seem to recall ... -
Z80, and 6502, in comparisonI was wondering about how each of these compared in terms of performance. The Commodore 64 had a 6502 @ 1MHz, and graphics processor VIC which took …
... case if the 6502 and Z80 performed much the same per ... a bit better than the Z80.
The BBC ... . The spectrum rom has a floating point calculator (RST #28) but I ... -
BASin Release 6 available for DownloadHi all - It's another cut'n'paste from CSS :) I've been tapping away again, and seeing as a couple of people have recently seen BASin's latest bits…
... the ">" program cursor to point to the line that the ... will take you to the point that the program loaded, but ... useful if a program uses z80 asm, and locks up on ... /> Fixed the accuracy in certain floating-point operations (such as 0.5 ... -
My emulator has a CPU bug, any ideas?.Hi all, I am writing a Speccy emulator in PureBASIC but have an odd bug. The spectrum interprets the odd numbers incorrectly whenever they are typed…
... problem with the integer or floating point conversion routines used by the ... . I have looked through my Z80 emulator code but I nothing ... -
yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... and 32 bit arithmetics and floating point),
- real time clock (if ... small).
3. Since Z80 has no MMU or superviser ... -
This might be something new[img]http://www.711chan.org/test/src/130427925559.png[/img] Have a look at this screenshot of my emulator ZX82. Notice the copyright message? That's…
... places a request for a Z80. It's up to ... burden as possible off the Z80 chip. What this means ... the host computer, not the Z80. Floating point routines, the calculator, tape ... that if you have a Z80 on your computer, it ... is loaded into the Z80's address space so ... -
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 …
... as follows:
3.5MHz Z80 CPU with 7MHz turbo mode ... with 48K display timings
Floating bus and contention emulation model ... to load
Implement a floating point co-processor usable as BASIC ... -
Math Quiz - MultiplicationThe topic is fast multiplication routines, from 8x8 to 32x32 and all points in between. These functions sit underneath floating point libraries, gen…
... between. These functions sit underneath floating point libraries, general integer / long / char ... fast but not to the point where it takes a silly ... -
ZX-Assembler version 0.8 (beta) releasedDear readers, yesterday I've published ZX-Assembler in its first version 0.8. It offers you some interesting features, even if I know there are …
... .
* Description of all Z80 mnemonics and pseudo instructions with ... disassemble them automatically
to Z80 instructions.
* Icons to ... and CASE. Also, using
floating point numbers is no problem. E ... -
Benchmarks It always shows up once in a while: benchmarks. http://www.z88dk.org/wiki/doku.php?id=temp:front#dhrystone_2.1 This small group includes Dhryst…
... floating point performance.
I've included two commerical z80 ... compiler available for the native z80. The latter is Hitech ... 's last z80 compiler, actually a cross ... reputation of generating the best z80 code. Both are commercial ... -
Z88DK v1.99B ReleasedAt Sourceforge: https://sourceforge.net/projects/z88dk/ It's been a year since the last release so it was time for another. This is another tran…
... is a development kit for z80 computers that contains the ... C or assembly language for z80-based machines.
... Over 50 different z80 machines have CRTs in the ... br />
Compiling for Generic z80 Embedded Systems Using the New ... -
Idea about improving EmulatorHi, I got a bright idea today how to improve such excellent emulators a bit more. Okay, disassemblers are available in nearly every one new released …
... the complexity of Basic and floating point arithmetic, just look at HiSoft ... want to start a new Z80 cross-assembler project some day ... -
How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…
... program counter - without it the Z80 doesn't know where it ... partner.
However the Z80 works in single bytes. So ... section on the way the Z80 works and binary form.
floating point stuff in machine code would ... -
Starglider 128k TZXNow I would if I could, but I simply don't have a copy of the game on tape handy, but is there any possibility that someone could upload a working ve…
... we have the Z80 so I guess the point it moot.
floating point thing or some other internal ... -
Basic or Machine code?Hopefully the correct area of the site to post this question. Anyways, I have got hold of several books on programming my spectrum, and I was wonderi…
... way it's done in Z80 machine code.[/quote]
... harder to achieve on the Z80 BUT it does have ... processor features of the Z80. For example floating point numbers are the ... want a stepping-stone to Z80 machine code, it's ... would be created with Z80 assembler. -
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…
... and Atari 8bit machines used floating point only and it slowed them ... what they are doing. The Z80 based Radio Shack systems had ... point is pretty fast and there might even be some existing Z80 ... a speed boost. I should point out that that replacement version ... -
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…
Check out the Z80 math lib (Z80MATH.ZIP) on ... seem to be someone wanting floating point out there, so let me ... stuff, was the NASCOM. a Z80 based machine, I and my ... me the source for the floating point routines used in this Pascal ... -
If a C64 can do it...Forgive me if this isn't the right section. We've seen coders surprising us over and over again with excellent demos and things that a few years ago…
... 20%-25% faster than the Z80 running the same code once ... actually used a 1 byte floating point number if I remember right ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... , though I do keep the z80's -- and z88dk's -- limitations ... eg, is written for a z80 machine with a crazy display ... interpretter automatically converting to integer / floating point as needed.
In ... A memory address, on the z80, is 2-byte in size ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... bits for "uchar l". The z80's stack pointer will, therefore ... generate code. Functions written in z80 can use all three, with ... /> [/code]
with the z80's stack pointer SP pointing ... -- this will depend on the floating point library in use I think ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... I haven't seen any z80 random number generator that ... language however we are using floating point numbers in this program ( ... the C compiler uses a floating point divide from the get- ... integer here" and "print a floating point number here" respectively. The ... -
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…
... say there are about 4000 floating point operations performed if you ... 1300 instructions per operation. A floating point multiply with 24 mantissa bits ... same performance as a 4MHz Z80... but the CoCo BASIC doesn ... times as fast as the Z80 for the same MHz ... -
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…
... 1300 instructions per operation. A floating point multiply with 24 mantissa bits ... isn't favorable to the Z80?
The original numbers ... numbers in favor of the Z80... not against.
The ... you could argue the fastest Z80 suffers that.
The ...
