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annotate vint.s16 @ 27:351a0d0cce3b

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Updated spec to make the 3rd and 4th controller IO ports as reserved
author Michael Pavone <pavone@retrodev.com>
date Fri, 01 Apr 2016 21:51:46 -0700
parents 083347ccd508
children 03177ff78094
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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26
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1 ldim vectors, r0
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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2 setvbr r0
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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3 ;current color value
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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4 ldim 0, r0
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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5 ;color increment
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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6 ldim $11, r3
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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7 ldimh $1, r3
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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8 ;color max
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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9 ldim $FF, r5
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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10 ldimh $F, r5
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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11 ;counter
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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12 ldim 1, r4
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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13 ;Palette RAM address
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
14 ldim 0, r1
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
15 ldimh $FF, r1
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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diff changeset
16 ;enable interrupt
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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17 ori 2, sr
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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diff changeset
18 ;enable display
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
19 ldim 0, r2
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
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20 ldimh $80, r2
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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21 outi $D, r2
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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22 wait
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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23 bra wait
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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diff changeset
24 ;shouldn't get here, disable display so it's clear something broke
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
25 ldimh $0, r2
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
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26 outi $D, r2
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
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27 bra wait
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
28
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
29 vectors:
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
30 dc.w 0
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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diff changeset
31 dc.w vint_handler
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
32
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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diff changeset
33 vint_handler
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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34 addi -1, r4
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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35 bne done
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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36 outi $E, r1
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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37 outi $F, r0
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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38 cmp r0, r5
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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39 beq down
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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40 resume
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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41 add r3, r0, r0
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
42 beq up
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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43 ldim 5, r4
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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44 done
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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45 reti r13
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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46 down
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
47 ldim $EF, r3
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
48 ldimh $FE, r3
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
49 bra resume
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
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50 up
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
51 ldim $11, r3
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
52 ldimh $1, r3
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
53 ldim 5, r4
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
54 reti r13
083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
Michael Pavone <pavone@retrodev.com>
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diff changeset
55