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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)…
... the same PRINT statement; the calculator stack doesn't get reset ... another statement and reset the calculator stack, so the space used ... -
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)…
... way to get both the calculator & machine stacks included when ... -
New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…
[QUOTE=bverstee;715420]I'm curious how different the rates from mail and parcels are in other countries.[/QUOTE]
Web-site usps.com has a calculator for prices from US -
At the Carboot sale today.Today at the carboot sale I picked up An Acorn Electron -I see these all the time, An Official Branded BBC Micro Datacassete Recorder - I'v…
Picked up a Commodore 796M calculator at the car boot. Date ... -
RND cyclical behaviourGood evening. I'm playing with RND function to show its cyclical behaviour, i.e. after 65536 calls to it, the next one will return the same value of …
... /> RNDFUN: ld b,$1D ;B= calculator code for VAL
rst ... -
Sinclair calculator reverse-engineered[url]http://files.righto.com/calculator/sinclair_scientific_simulator.html[/url]
... =http://files.righto.com/calculator/sinclair_scientific_simulator.html]this[/URL] ... of the Sinclair Scientific calculator and figured out how ... a cheap four function calculator chip. Best of all ... page has an interactive calculator that live steps through ... -
Sinclair calculator reverse-engineered[url]http://files.righto.com/calculator/sinclair_scientific_simulator.html[/url]
[url]http://files.righto.com/calculator/sinclair_scientific_simulator.html[/url]
Just for info -
Your latest retrogaming purchaseAs there is another thread about gaming purchases, It would be nice to know your latest retrogame adquired, preferably Spectrum, but of course other …
... it intended to sell Radionics' calculator and TV interests; they were ... -
Machine code optimisationI'm geting back into z80 coding and wonder what the best way of showing how efficient the code is. I've got Rodney Zaks book and see there are timin…
... /zx-comp/mccalc.zip]ROM calculator[/url] feature for reference. -
sinclair watch on antiques road show:) and his radio also.. haaaw much ? next week I will be on it.. with my classic collection of cardboard covered sinclair releases.. none of that …
under valued,
still better than a few years back when someone had a boxed Sinclair calculator, special limited edition for employees, and dozy twonks had it on the intro, laughed and said put it in a drawer will be worth something one day -
sinclair watch on antiques road show:) and his radio also.. haaaw much ? next week I will be on it.. with my classic collection of cardboard covered sinclair releases.. none of that …
... someone had a boxed Sinclair calculator, special limited edition for employees ... -
sinclair watch on antiques road show:) and his radio also.. haaaw much ? next week I will be on it.. with my classic collection of cardboard covered sinclair releases.. none of that …
... />
I have a commodore calculator here, it's from the ... -
sinclair watch on antiques road show:) and his radio also.. haaaw much ? next week I will be on it.. with my classic collection of cardboard covered sinclair releases.. none of that …
I did used to have a pocket calculator collectors price guide book. -
Returning to BASIC from asmI never had to do it till now but there is always the first time :) At machine code program start I preserved SP register and all the other ones. A…
... altered system variables, left the calculator stack unbalanced, overwritten items on ... -
iOS7 ReleasedGood news, we can all download Apples newest software today! :) Am trying to download and install for the iPhone & iPad, but Apples servers are rathe…
... address book, calendar, appointment scheduler, calculator, world time clock, games, electronic ... -
New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…
[QUOTE=Shaos;727047]Really? Is it a bug or feature? ;)
Which address?[/QUOTE]
It deliberately tries to write to #0000 during a calculator operation, and there's a bug where the screen scroll rolls over into #3FFF. -
New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…
... write to #0000 during a calculator operation, and there's a ... -
New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…
[QUOTE=aowen;727061]It deliberately tries to write to #0000 during a calculator operation...[/QUOTE]
Does it mean any basic math? -
New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…
IIRC the Spectrums internal calculator uses address &0000 to ... -
New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…
[QUOTE=Shaos;727208]Does it mean any basic math?[/QUOTE]
Had to look it up. It's the skip constants routine at #33F7. Overwrites the first five bytes of the ROM. Can contain any value at all. Gets called during calculator operations. -
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…
... instruction set for its internal calculator which probably saves a heap ... -
SoftPLAY: Use the PLAY command from 48 BASICNow you don't need 128 BASIC to use the [B]PLAY[/B] command. Just use [B]PRINT #8;[/B] instead. [url]https://dl.dropboxusercontent.com/u/15659782/So…
... paging just to use the calculator.
[quote]"48kers can try ... -
Use PLAY without the 128 ROMHere's a little thing I wrote called SoftPLAY: [url]http://www.worldofspectrum.org/forums/showthread.php?t=45259[/url] Now you can use the PLAY comm…
... a timing value for the calculator loop that gives something closer ... -
SoftPLAY: Use the PLAY command from 48 BASICNow you don't need 128 BASIC to use the [B]PLAY[/B] command. Just use [B]PRINT #8;[/B] instead. [url]https://dl.dropboxusercontent.com/u/15659782/So…
... does use the floating point calculator.[/QUOTE]
Then ok ... rom routines and floating point calculator (I must make some patches ... -
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…
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…
[code]; --- THE PSG and LOUDSPEAKER ROUTINES ----------------------------------------
; THE 'SOUND' COMMAND
org 0x0374
sound_4:
rst next_char ; advance pointer
org 0x0375
sound:
call expt_2num ...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…
... br /> call expt_exp ; parameter to calculator stack
call syntax_z ; ... call use_zero ; put zero on calculator stack
jr sa_code_2 ; immediate ... call use_zero ; put zero on calculator stack
jr sa_code_4 ; immediate ...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…
... ; remove from
fdel ; calculator
fce ; stack
push ... ; put on calculator stack
fwait ; enter calculator
fstk ... it
fce ; exit calculator
exx ; alternate register ...
