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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…
... floating point representation in a table.
[quote]
The fastest Z80 ... compared to the thousands of floating point operations inside the loop. The ... to floating point operations being generated; I could have used a floating point random ... -
Retro Gamer Issue 45[img]http://www.retrogamer.net/issues/RG_045.jpg[/img] The Making of NiGHTS: Into Dreams We go behind the scenes and discover the fascinating creati…
... Steven Vickers had to learn Z80 assembler before he wrote the ... he did was write the floating point routines. That is just too ... .
I've known Z80 Assembler for almost 25 years ... -
Retro Gamer Issue 45[img]http://www.retrogamer.net/issues/RG_045.jpg[/img] The Making of NiGHTS: Into Dreams We go behind the scenes and discover the fascinating creati…
... Steven Vickers had to learn Z80 assembler before he wrote the ... he did was write the floating point routines. That is just too ... -
Cross Platform DevelopmentWhat's the best way to develop cross platform apps? By best, the only limiting criteria would be "at no cost" :)
... use it to develop 100% z80 projects, 100% C projects ... with C compilers on z80 platforms. And the shared ... largest source of reusable z80 code available as far ... / attribute address manipulation routines, floating point math routines (ROM or independent ... -
Z88DK fun and gamesHi, I was wondering if anyone here uses Z88DK with TommyGun and knew about how to link the two together (e.g. how do I use a screen, sprite or map e…
... supports more than a dozen z80 machines and each such machine ... you plan to compile the z80 library code.
3 ... )
-lm optionally links to floating point math library (only needed for ... -
Any BBC aware Specchums out there?After the UK101 and VIC20 emulators I've moved my sights onto emulating a BBC computer. This emulator will be different though in that it will be a Z…
... Basic which only deals with floating point. I therefore kept the BBC ... test using floating point. I really do hope to ... into LD (HL),$00 in Z80. -
BASin r14d - Final bugfix for the r14 seriesOk, there's not a great deal to "show" here, as most of the work has been going on "under the hood" so to speak. And there's been a [i]lot[/i] of wor…
... the translation of BASIC to z80 - the best way to handle ... to RPN for compilation to z80 - that's not a problem ... be handled? How about numbers? Floating point? ROM routines for that, or ... -
The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…
... code base suitable for all z80 machines. Gary's FAT code ... try a z80 asm implementation. There's also an IEEE floating point library ... would do well implemented in z80. Just throwing some stuff out ... -
Minor Update to Gasman's Midi2BEEPDon't know whether this is worthy an announcement, but for those of you who enjoyed Gasman's midi2BEEP utility, a new variant has been made called mi…
... and error, knowing nothing about floating point calculations from the ZX rom ... />
Im trying to learn z80 assembly, so I thought this ... -
BITWISE operators...Hi Folks, Another question - is there a way (fast) to do bitwise operations in Sinclair BASIC? Many thanks Paddy
... use a lower level of floating point precision (Sinclair BASIC uses 40 ... BASIC, YS MegaBASIC, BBC BASIC (Z80).
I normally only ... -
logical operators and the calculator stackI was wondering if there was a utility which would provide the list of commands needed for the ROM calculator to evaluate a logical expression. For e…
... using Z80 instructions? (unless your variables would were all floating point ... (CH_ADD),de ;CH_ADD will point to the beginning of this ... (more important) build the floating point "hidden" values, needed later ... (CH_ADD),hl ;let CH_ADD point again to our ready to ... -
logical operators and the calculator stackI was wondering if there was a utility which would provide the list of commands needed for the ROM calculator to evaluate a logical expression. For e…
... as it doesn't need floating point values, or interact with BASIC ... to compile it straight to Z80 machine code using registers and ... -
Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... /> I've been coding some Z80 +3DOS routines recently to load ... write any of it in Z80:
Application screen ... /> [/code]
64 BIT floating point audio pitch scaling routine based ... LZ77 depacker for the GameBoy Z80 variant that I ported from ... -
Oscilloscope Speccy ProgramHi all, I remember very well in the old days when my Speccy was my single computer (around 1992) that I have had an oscilloscope software. This uses…
... the window as a reference point.
The Spectrum is ... be the case as the Z80 is not capable of running ... sampling rates as 32 BIT floating point multiplication is required.
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... noticeable in the editor, the floating point, and the character printing routines ... it looks like a 20MHz Z80 is the best option as ...Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... going to use a real Z80, why not make some improvements ... software that uses the ROM floating point routines would be to implement ...Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... going to use a real Z80, why not make some improvements ... software that uses the ROM floating point routines would be to implement ...Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... the ROM's floating point routines. In the Spectrum ROM, floating point routines are ... counter (PC) point to 0x0028 (as in the normal Z80), you'd ... the Z80. Thus any existing program that uses the ROM floating point routines ...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…
... . Write it for a general z80 target but keep the 48k ... larger audience for a general z80 implementation and tbh 48k ram ... and 32 bit arithmetics and floating point),
the integer stuff ... .
"
3. Since Z80 has no MMU or superviser ...Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... functions (trigonometric one COS, and floating point ones as well I think ... a way to instruct the Z80 to execute RET instruction when ...Assembly help: EQUCan anyone explain in duffers language the purpose of the EQU term in assembly? I found this info in another thread: EQU: Equate a name to a specif…
... />
MACRO fwait ; stop the Z80
rst 28h
ENDM ... />
MACRO fetof ; e to floating-point
defb 0x3c
ENDM ... BASIC source code to use floating-point pseudo-instructions in place of ...writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... another emulator (or a real Z80) to compare against, though...)
floating point print routine. The upshot of ...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…
... the host computer, not the Z80. Floating point routines, the calculator, tape routines ... BASIC, but there's no Z80 support and it won't ... ROM is loaded into the Z80's address space so that ...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…
... QUOTE]
A Z80 running at a high clock ... didn't see the point, something you often see ... just be an additional Z80 used for one important ... see how an extra Z80 specifically used for maths ... intercept calls to the floating-point routine then pass off ...M/C mathsHow would I do the equivalent of LET A=B*7 in machine code?
... , or is this a general Z80 calculation?
It seems ... dealing with BASIC variables or floating point values. Assuming non-BASIC:
Limboanyone played Limbo on PSN? [youtube]GCA79zPaQe0[/youtube] I would image a game like this would work really well on the speccy
... lot of math, preferably in floating point and with high precission. if ... such engine on zx but z80 is underpowered to do the ...Confounded DEF FNCan anyone see why this is going wrong? I've been tinkering with it since tea time and got nowhere. [code] 2 DEF FN t$(n,t,d) =STR$ INT (n/t)…
... 't be too complicated in Z80. EDIT: Most division algorithms give ... remainder whilst being calculated. Using floating point maths for this isn't ...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…
... line: EDIT 10
[*]Enhanced floating point library.
[*]Enter tab stops ... on divIDE and divMMC.
[*]Z80 LDIR block copy: PUT 49152 ...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…
... over implementing the whole floating point series in Z80.
[quote]Massive ...Type-in BASIC contest on Reddit.Not sure how WOS-legal it is to mention/link to other forums, but Reddit is having a contest on r/retrobattlestations, asking readers to type a speci…
... i should just scan al z80 and tap file for the ... include a hidden 5-byte floating point form for every numeric ... values I think). Also, Z80 files are compressed and the ... />
I picked a Z80 file and a TAP file ... one false-positive on the Z80 and also one on ...
