[hatari-devel] Chaos AD demo question

[Laurent Sallafranque]

Later, I can read :

cpu video_cyc= 63032  56 at 123 : 00E032EC 1029 0002                MOVE.B 
(A1, $0002) == $fffffc02,D0<---- here
cpu video_cyc= 63042  66 at 123 : 00E032F0 b1fc 0000 0f96           CMPA.L 
#$00000f96,A0
cpu video_cyc= 63048  72 at 123 : 00E032F6 6600 0622                BNE.W 
#$0622 == $00E0391A (F)
cpu video_cyc= 63054  78 at 123 : 00E032FA 4a38 115a                TST.B 
$0000115a
cpu video_cyc= 63060  84 at 123 : 00E032FE 6664                     BNE.B 
#$00000064 == $00E03364 (F)

cpu video_cyc= 63064  88 at 123 : 00E03300 0c00 00f6                CMP.B 
#$f6,D0 <---- here
cpu video_cyc= 63070  94 at 123 : 00E03304 6406                     BCC.B 
#$00000006 == $00E0330C (T) <---- here
cpu video_cyc= 63076 100 at 123 : 00E0330C 0400 00f6                SUB.B 
#$f6,D0
cpu video_cyc= 63082 106 at 123 : 00E03310 0280 0000 00ff           AND.L 
#$000000ff,D0
cpu video_cyc= 63088 112 at 123 : 00E03316 47f9 00e0 3350           LEA.L 
$00e03350,A3
cpu video_cyc= 63094 118 at 123 : 00E0331C 11f3 0000 115a           MOVE.B 
(A3, D0.W*1, $00) == $00e03359,$0000115a
cpu video_cyc= 63104 128 at 123 : 00E03322 47f9 00e0 335a           LEA.L 
$00e0335a,A3
cpu video_cyc= 63110 134 at 123 : 00E03328 11f3 0000 115b           MOVE.B 
(A3, D0.W*1, $00) == $00e03363,$0000115b
cpu video_cyc= 63120 144 at 123 : 00E0332E 0640 00f6                ADD.W 
#$00f6,D0
cpu video_cyc= 63124 148 at 123 : 00E03332 0c00 00f8                CMP.B 
#$f8,D0 <---- here ...
cpu video_cyc= 63130 154 at 123 : 00E03336 6d0c                     BLT.B 
#$0000000c == $00E03344 (F)
cpu video_cyc= 63134 158 at 123 : 00E03338 0c00 00fb                CMP.B 
#$fb,D0
cpu video_cyc= 63140 164 at 123 : 00E0333C 6e06                     BGT.B 
#$00000006 == $00E03344 (T)
cpu video_cyc= 63146 170 at 123 : 00E03344 0c00 00fd                CMP.B 
#$fd,D0
cpu video_cyc= 63152 176 at 123 : 00E03348 6d04                     BLT.B 
#$00000004 == $00E0334E (F)
cpu video_cyc= 63156 180 at 123 : 00E0334A 11c0 1173                MOVE.B 
D0,$00001173
cpu video_cyc= 63162 186 at 123 : 00E0334E 4e75                     RTS.L


There are lot of tests with D0 ($F8 (mouse), $FB(mouse), $FD(Joystick)). 
Is this correct ?

Doesn't this code use the Acia 6802 ?

Laurent



Le 14/02/2011 23:09, Laurent Sallafranque a écrit :
> In the trace, I can read this :
>
> cpu video_cyc= 10168 440@ 19 : 00E032EC 1029 0002                
> MOVE.B (A1, $0002) == $fffffc02,D0 <--here
>
> cpu video_cyc= 10178 450@ 19 : 00E032F0 b1fc 0000 0f96           
> CMPA.L #$00000f96,A0
> cpu video_cyc= 10184 456@ 19 : 00E032F6 6600 0622                BNE.W 
> #$0622 == $00E0391A (F)
> cpu video_cyc= 10190 462@ 19 : 00E032FA 4a38 115a                TST.B 
> $0000115a
> cpu video_cyc= 10196 468@ 19 : 00E032FE 6664                     BNE.B 
> #$00000064 == $00E03364 (F)
>
> cpu video_cyc= 10200 472@ 19 : 00E03300 0c00 00f6                CMP.B 
> #$f6,D0<-- and here
> cpu video_cyc= 10206 478@ 19 : 00E03304 6406                     BCC.B 
> #$00000006 == $00E0330C (F)
>
> It seems to test Status report ($F6).
>
> What is this exactly ?
>
> Laurent
>
>
>> Hello
>>
>> from the ikbd's doc :
>>
>> The special codes 0xF6 through 0xFF are reserved for use as follows:
>>     0xF6            status report
>>     0xF7            absolute mouse position record
>>     0xF8-0xFB       relative mouse position records(lsbs determind by
>>                      mouse button states)
>>     0xFC            time-of-day
>>     0xFD            joystick report (both sticks)
>>     0xFE            joystick 0 event
>>     0xFF            joystick 1 event
>>
>> So, this waits for an event on joystick 0
>>
>> Nicolas
>>
>>
>
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