... ]Ooops, should have been posted in a seperate thread ...[/B]
IN 31 port.

[IMG]http ...

... .g. IN 63 instead of IN 31, and IN 0xEFEF instead of IN 0xEFFE.

... ; ~a3 & a2 & a1; // IN #E7
assign adr8 = ~nmreq ... ; a5 & ~a2 & a1); // IN 227,235,243,251

... edge connector to convert an IN-31 interface stacked behind it to ... IN-55, so it can be read separately from an IN-31 ... interface placed in front of it. That ...

... just do normal kempston style IN 31 commands.

If ... attached

The first IN 31 executed would receive the data ... to 000
the next IN 31 executed would receive the data ... only 3 attached in this example the next IN 31 would receive the ...

... an old interface from IN-31 to IN-55 by exchanging the ... A5 address lines. Or in most cheap decoder schemes, ... leaves the other pins in the same low/high ... pattern as Kempston, in case you're re- ... was a bit more selective in its decoding.

... an old interface from IN-31 to IN-55 by exchanging the ... A5 address lines. Or in most cheap decoder schemes, ... high pattern as Kempston, in case you're re- ... was a bit more selective in its decoding.

in a month.

... do the same with port 31 (or 55), if you knew ... 't actually tell between IN-31 and OUT-31.

But I ...

... the code jumps about doing IN 31's at random.

... \ 76543210 /

--------------------------------------------------------------------------------
#1F/31 xxxxxxxx00011111 xxxxxxxx xxxxxxx1 Kjoy(7 ... As for all the others in that list, they WILL ... low when reading Kempston IN-31.

... and return the counter state in the top bits. Or use ... to read back with an IN. The latter is not really ... uses just a single port in the ZXI addressing scheme, to ... this for two sticks on IN 31 with a simple strobed flip ... compatible than picking a new IN address.

... if people really are interested in either of the following ...
[B]1. A plug-in graphics card[/B], like [I ... all cards ended up in the same mode with ... interface[/B] that supports IN-31 and IN-55, for adding an ... , is there the demand in the community? I'm ...

Write this program in basic:

10 OUT 163,123:PRINT IN 31:PRINT IN 31:PAUSE 10:RUN

Program show two value, both must be same (zero values).

... read any of those joysticks (IN 31, 55, 95) will probably simultaneously ...

... :

10 LET A=IN 31
20 PRINT AT 5 ...

And if you want some colour...

10 LET A=IN 31
20 PRINT AT 5,5;A;" ";
30 IF A7 THEN BORDER A/2-1
50 GO TO 10

[B][I]Mark[/I][/B]

... own joystick interface to use IN-31 and IN-55. Some guys have ... FIRE-2 and +5V, just in case the joystick needs it ... just check for anything set in the top 3 bits returned ... the joystick, e.g. with IN-31, and assume it's a ...

... , floating bus related.

In various Kempston (and compatible) joystick ... interface is not present, reading IN 31 dec will return either 255 ...

... ve tried the version from Velesoft (in the archive at [url] ... br />
[URL="http://velesoft.speccy.cz/zx/divide/software ... /divmmc_eprotector.zip"]http://velesoft.speccy.cz/zx/divide/ ... /eprotector-divide.zip"]http://velesoft.speccy.cz/zx/divide/ ...

... you could just add them in parallel to the switches for ... two programmable IN xx pins (e.g. IN 31) to tie in joysticks to ...

... you could just add them in parallel to the switches for ... two programmable IN xx pins (e.g. IN 31) to tie in joysticks to ... /> You presume well. It's in an alpha stage, no sound ... /> Fortunately I have Manic Miner in [URL="http://xn--bacteria-7dg ...

... (Sinclair or programmable types). Though in those flat genuine Kempston-made ... the shorter connector. The Kempston IN 31 protocol only uses an 8 ... -bit IN address so that shouldn't ...

... that it clashes with most IN 31 interfaces! You can't ... as an old IN 31 interface. Because most old IN 31 interfaces only check ... can tell between IN 31 and IN 95.

IN 55 was chosen ... and trigger an old IN 31 interface. IN 55 itself requires checking ...

...
Joypads have been plugged in to the computer and setup ... Speccy then plugging in the joypads results in Speccy not seeing ... ticking Kempston
In 31 Works fine via IN 31 ZX Basic and BM10 ... Print AT 0,0;IN 31;"  ":Goto 10this works, printing ...

... 't simply make a new IN 95 interface and attach it ... as an old IN 31 interface. Because most old IN 31 interfaces only check ... one bit (A5), and so an IN ... can tell between IN 31 and IN 95.
Fortunately, in an emulator, I ...

... !Thanks

Same here. In my world, as a kid ... instance; I knew of the IN(31) thing where it puts random ... have no joystick hardware plugged in and I played both those ... games in the day and noticed the ...

IN 55 was chosen so that ... low and trigger an old IN 31 interface. IN 55 itself requires checking ... can then add an old IN 31 interface and it won't ... second Kempston at IN 55 (37h) and IN 95 (5Fh) in Speccy 3 ...

In reality an actual Fuller joystick ... A7 going low, an IN 31 (or IN-55 or IN-95) will set ... If you change the lines in the A8-A15 range, it ... with #EF instead of #FE in the low-byte (which is ... these alternatives, IN-95 also demands a better IN-31 decoder than the ...

... going low, an IN 31 (or IN-55 or IN-95) will set ... asking for new features in emulators but the community ... needs to put in the work so that ... cross-over would easily avoidable in such cases (and I ... interfaces, this was never in question. I was simply ...

... will activate on both the IN and the OUT instruction. And ... respond if you just do IN 0.

See these ... /forums/discussion/50688/anyone-interested-in-all-the-different-models-of ... A3 and respond to IN 55 instead of IN 31. This was carefully ...