This page (revision-14) was last changed on 03-Feb-2023 15:21 by Florian Dingler 

This page was created on 14-Mar-2010 18:11 by Carsten Strotmann

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Version Date Modified Size Author Changes ... Change note
14 03-Feb-2023 15:21 4 KB Florian Dingler to previous
13 07-Jul-2018 21:28 4 KB Florian Dingler to previous | to last
12 30-Jun-2018 14:32 4 KB Florian Dingler to previous | to last
11 30-Jun-2018 14:27 3 KB Florian Dingler to previous | to last
10 08-Oct-2017 19:34 3 KB Florian Dingler to previous | to last
9 10-Mar-2017 22:36 3 KB Florian Dingler to previous | to last
8 10-Mar-2017 21:10 3 KB Florian Dingler to previous | to last
7 10-Mar-2017 21:07 3 KB Florian Dingler to previous | to last
6 09-Jan-2012 08:33 2 KB Gromit to previous | to last
5 05-Jan-2011 14:01 2 KB Gromit to previous | to last
4 05-Jan-2011 13:50 2 KB Carsten Strotmann to previous | to last
3 22-Mar-2010 22:17 2 KB Florian Dingler to previous | to last
2 15-Mar-2010 09:08 2 KB Gromit to previous | to last
1 14-Mar-2010 18:11 2 KB Carsten Strotmann to last

Page References

Incoming links Outgoing links
How to query the MultiJoy Interface
How to query the MultiJoy Interface

Version management

Difference between version and

At line 8 changed one line
The MultiJoy is an adapter to connect 8 or 16 Joysticks to a ATARI 8Bit (600XL, 800XL, 130XE, ...). The MultiJoy was designed by Radek Sterba (RASTER). You can find detail Information on this adapter on [Radeks website|http://www.infos.cz/raster/atari/hw/multijoy.htm]
The MultiJoy is an adapter to connect 8 or 16 Joysticks to a ATARI 8Bit (600XL, 800XL, 130XE, ...). The MultiJoy was designed by Radek Sterba (RASTER). You can find detail Information on thi adapter on [http://www.infos.cz/raster/atari/hw/multijoy.htm]
At line 10 changed 2 lines
Mathy van Nisselroy has information about MultiJoy Games on
his [site|http://www.mathyvannisselroy.nl/special%20stuff.htm]
Mathy van Nisselroy has information about MultiJoy Games on his site --> [http://www.mathyvannisselroy.nl/special%20stuff.htm]
At line 13 removed one line
At line 29 removed one line
(proceed a delay 30 cycles at least between write to PORTA register and following reading of PORTA or TRIG0. )
At line 38 removed 3 lines
LDX #$06 ;Here is a delay 30 cycles before reading of PORTA
WAI DEX
BNE WAI
At line 67 changed 2 lines
ST=PEEK(54016):ST=ST-INT(ST/16)*16 : REM read Joystick value
TR=PEEK(53264 ) : REM read Trigger value directly from GTIA
ST=STICK(0) : REM read Joystick value
TR=STRIG(0) : REM read Trigger value
At line 84 changed 6 lines
PAUSE %10 : REM wait for value
ST=PEEK($D300)&$0F : REM read Joystick value
REM ST=STICK(%0) - this does not work properly, because the Joystick value
REM which is read from register 632 is only updated every 1/50th second
REM TR=STRIG(%0) : REM this does not work either
TR=PEEK($D010): REM read it directly from the GTIA register
PAUSE %1 : REM wait for value
ST=STICK(%0) : REM read Joystick value
TR=STRIG(%0) : REM read Trigger value
At line 95 changed one line
Initializing:
to be added
At line 97 removed 48 lines
{{{
PROC INITMULJOY()
BYTE PACTL=$D302,PORTA=$D300
;
PACTL==&$FB ; set bit 3 of pactl to 0. 1=use Port A for data input/output, 0=define data direction
PORTA=$F0 ; set upper nibble of porta to write (1111) and lower nibble to read (0000)
PACTL==%$04 ; set bit 3 of pactl to 1 again. 1=use Port A for data input/output, 0=define data direction
RETURN
}}}
Query the Joystick:
{{{
PROC QUERYMULJOY(BYTE PL, BYTE POINTER STI,TRI)
; call procedure stating PL (range 0...8) and 2 pointers to variables to which the result is returned
; e.g. "QUERYMULJOY(0,ST,TR)" check for Joystick 0, return values in the variable ST and TR point to
BYTE PORTA=$D300, TRIG0=$D010, WSYNC=$D40A
;
PORTA=(PL LSH 4) ; LSH 4 is the same as multiply by 4
PL=6
DO PL==-1 UNTIL PL=0 OD ; wait a wee bit so the PIA can adjust to the new value
TRI^=TRIG0 ; now read the trigger
STI^=(PORTA&$0F) ; and read the joystick, and blank out the high nibble by ANDing %00001111=$0F
RETURN
call the procedure with:
PROC MAIN()
BYTE TRI,STI,PL
BYTE POINTER S,T
S=@STI ; pointer S now points to STI
T=@TRI ; and T to TRI
DO ; main loop
FOR PL=0 to 8 DO
QUERYMULJOY(PL,S,T) ; hand over the joystick number you want to query and two POINTERs for Stick and Trigger
; variables where you want the results.
; STI now holds the value for the stick
; TRI now holds the value for the trigger
; go ahead and do something with it...
OD
OD ; end of main loop
RETURN
}}}
This page (revision-14) was last changed on 03-Feb-2023 15:21 by Florian Dingler  Top