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IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... chip legs. You need to detect them in hardware and determine ... override IN 254, which means keypress-based joysticks won't work ... early upright Kempston interfaces, only detect address line A5 going to ... -
IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... />
The PEEK and POKE BASIC statements manipulate memory using the ... instruction. The IN and OUT BASIC statements differ in that they ... A0 together with /IORQ to detect access to this I/O ... -
Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... beep or be able to detect the difference ? The answer was ... NO it could not detect the difference :the Yesico PC ... exactly wrong , are a bit basic to say the least.But ... -
Ultimate games with short machine code files loaded lastThis is a bit geeky, you've been warned! I remember early Ultimate games loaded from tape had the ascending beeping noise, a "Please wait" message, …
... .
I remember the BASIC loader of another ultimate game ... cassettes, so the loader could detect if a copy was not ... /> - The loader is embedded in BASIC and encrypted (in Alkatraz, it ... -
Reading sequential key pressesI am thinking about writing a quick game and have an idea that requires me to read alternate key presses. I’m thinking along the lines of Daley Thomp…
... and the responsiveness compared to basic's input is very ... games do not translate the keypress frequency directly to some ... speed. Or perhaps each 'successful' keypress adds a small fraction of ... in acceleration, and the keypress would get picked the next ... -
I'm writing an Operating SystemOkay this might seem like a bait thread, but I am legitamately interested in figuring out how to write a multi-process system for the ZX Spectrum (no…
... are easy to detect.
As for the basic multitasker - if ... ROM then simply rewrite zx basic interpreter as an application. Use ... -
Noob's guide to joysticksWhy on earth would I be asking this *now*, I hear you all scream? The answer... curiosity. Back in the day all I ever had was a +2 and Sinclair's …
... from IN 31 using BASIC, since Sinclair BASIC wasn't designed to ... machine code, so you can detect diagonals and other things where ... -
A few questions about sound and keys in BASICIf I want sound in my BASIC game I have to use BEEP right ? It seems to lock up the CPU for far too long . On Arjun's page I found how to use CALL 94…
... a code for a single keypress (the codes on pages ... .
In BASIC the IN command can be ... in the results. As BASIC has no bitwise commands ... IN's more useful in BASIC for joystick control, as ... a particular bit 'n' in BASIC:
[code]
... -
Mysterious error message ?Something just occurred to me, when I try to load certain JSW games which require 128k memory into my emulator in 48K mode I get this error message. …
... locations in the ROM to detect 48k (H=0), 128k (H ... 4,(IY+1) ;Running 128 BASIC?
JR Z,BERR48 ;No ... HL,(5B8BH) ;Fake a 128 BASIC error.
LD (MSRET),HL ... -
ComCon interface with an auto-fire joystick is possible?I need a little advice on this one, please! I have a konix speedking, with two fire buttons and auto-fire switch. I can use it with the comcon int…
... switch for the interface to detect it closing and current flowing ... chips in the circuit to detect the drop in voltage (from ... on the 'common' wire and detect when the Up/Down/Left ... '0' to the Spectrum (because keypress bits are represented by '0 ... -
ComCon interface with an auto-fire joystick is possible?I need a little advice on this one, please! I have a konix speedking, with two fire buttons and auto-fire switch. I can use it with the comcon int…
... switch for the interface to detect it closing and current flowing ... chips in the circuit to detect the drop in voltage (from ... on the 'common' wire and detect when the Up/Down/Left ... '0' to the Spectrum (because keypress bits are represented by '0 ... -
Help understanding the Z80.So I have a Z80 CPU and a 32k ram chip. I understand how they connect. (Data and address busses, chip select etc.) But how would i input information…
... 0-16383 that contains the basic system. Many systems will have ... . So your logic has to detect /MREQ=0, /RD=0, A15 ... -
Jump AlgorithmAfternoon all, trying my hand at a liitle basic coding ( it's a quiet work day :) ) and wondered if anyone has coded a platformer type jumping routin…
... jump? Does it have to detect objects while jumping?
BASIC, avoid using variables for the ... -
Why don't the variables print where I told them too?I wrote the following program to experiment with creating sounds using 3 notes of BEEP and having the ability to change the notes up or down one at a…
... then loaded them at a keypress. I wonder if it would ... but obviously very limited using Basic on the Speccy? Daft idea ... -
Spectrum Next in the ArchiveWhen the Spectrum Next is launched, should it be added to the archive, and games archived as per usual WoS usage? There are a lot of new games annou…
... some contrived case where you detect if there's more than ... ) or indeed any of the BASIC system memory locations. The RAM ... -
Why don't the variables print where I told them too?I wrote the following program to experiment with creating sounds using 3 notes of BEEP and having the ability to change the notes up or down one at a…
... then loaded them at a keypress. I wonder if it would ... but obviously very limited using Basic on the Speccy? Daft idea ... program, and if it was BASIC or machine code. -
ZXBaremulator v1.2Hi!, I've released ZXBaremulator v1.2. The new release add a few features and removes a limit. :) The new version can be downloaded from projec…
... , but unfortunately the Baremulator doesnt detect it and there is no ... ="https://learn.adafruit.com/adding-basic-audio-ouput-to-raspberry-pi ... -
ZXBaremulator v1.2Hi!, I've released ZXBaremulator v1.2. The new release add a few features and removes a limit. :) The new version can be downloaded from projec…
... , but unfortunately the Baremulator doesnt detect it and there is no ... ="https://learn.adafruit.com/adding-basic-audio-ouput-to-raspberry-pi ... -
ive found an attr scrolling routine but i want to remove the smaller scroller within it, etc.https://pastebin.com/K4nG3xbX also i would like to be able to change the colours and not have a shadow. http://www.worldofspectrum.org/pub/sin…
nice, it works, thanks bb
a couple of questions.
how do i change the colour?
and how do i add an interrupt to detect the keyboard so it returns to basic? (i know this will probably slow it down) -
Ensure program runs in USR 0 mode?Is there some BASIC that can be used in a program to make sure the the program runs (even on 128k models) in 48k or USR 0 mode? I obviously then wan…
... +1) ; Switch to 48 basic
ld hl, (RAMTOP ... Recontruction of stack for 48 basic
ld (hl), ... basic RETURN
dec hl ; (for detect ... -
Screen$ (x,y)Hi everyone As you know, Screen$ doesn't recognize UDG characters. Is there any way to solve this problem? I want to "identify" an UGD character o…
... you can use ATTR to detect something; it's much, much ... , not (x,y) in Spectrum BASIC, because it's awkward and ... -
ZXBaremulator v3.H(ikoki) BetaHi, Thanks to a Recreated ZX kindly donated by Hikoki, I've added support for it to ZXBaremulator. Now two keyboards can be connected to the PI…
Basic retesting without the Zx Recreated ... why it needed ad additional keypress on F8 is a bit ... -
IN instruction on emulatorsHi everyone I wrote: 10 PAUSE 0 20 PRINT IN 63486 If i press 1, result is 190 instead of 254 (i used FUSE and Spin) If i press 2, 189 (253) i…
... just went to the Sinclair Basic manual and looked it up ... /> Now compare that with the BASIC listing in the first post ... only, we’ll miss that keypress, because the Speccy returns us ... reset the unwanted bits in BASIC (it’s trivial in assembly ... -
ZXBaremulator v3.H(ikoki) BetaHi, Thanks to a Recreated ZX kindly donated by Hikoki, I've added support for it to ZXBaremulator. Now two keyboards can be connected to the PI…
... .[/quote]
NONSENSE IN BASIC
[/quote]
keypress in an USB transaction (6 ... -
Hello! New guy here!Hello there! Is this website still active? I feel like there's not much activity here, as if it's dead. Is this community is still alive? Also, the …
... point of view - is the Basic language.
Now you ... WORLD and ask SCROLL? Any keypress will just repeat that action ... -
Hello! New guy here!Hello there! Is this website still active? I feel like there's not much activity here, as if it's dead. Is this community is still alive? Also, the …
... point of view - is the Basic language.
Now you ... WORLD and ask SCROLL? Any keypress will just repeat that action ... -
Spectaculator 8.0 and 47loaderHi all I'm messing with [url="https://github.com/stephenw32768/47loader"]47loader[/url] (which is GREAT and very fun btw) and I find that Spectacu…
... 's no way it can detect everything and it seems a ... ?) included as by default the Basic remnants (if they remain) with ... -
Need the title of the Sinclair Basic manual to look for itI had a copy but I've lost the USB chip it was on! I need it to look up commands because some Basic programs I looked at all used the command MOD and…
... good is that the single keypress option remains unless you first ... know there wasnt any Sinclair Basic example.
I'm ...
