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Add a command line option for printing out label addresses on the command line. Useful for debugging purposes.
author Michael Pavone <pavone@retrodev.com>
date Wed, 07 Sep 2016 23:15:27 -0700
parents 03177ff78094
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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083347ccd508 Implemented vblank interrupts and fixed a bug in exception vector address calculation
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1 ldim vectors, r0
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2 setvbr r0
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3 ;current color value
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4 ldim 0, r0
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5 ;color increment
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6 ldim $41, r3
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7 ldimh $8, r3
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8 ;color max
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9 ldim $DF, r5
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10 ldimh $FF, r5
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11 ;counter
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12 ldim 1, r4
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13 ;Palette RAM address/length
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14 ldim 1, r1
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15 ;enable interrupt
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16 ori 2, sr
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17 ;enable VINT generation
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18 ldim 0, r2
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19 ldimh $20, r2
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20 outi $D, r2
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21 wait
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22 bra wait
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23 ;shouldn't get here, disable VINT so it's clear something broke
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24 xori 2, sr
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25 ldimh $0, r2
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26 outi $D, r2
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27 bra wait
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29 vectors:
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30 dc.w 0
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31 dc.w vint_handler
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32
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33 vint_handler
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34 addi -1, r4
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35 bne done
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36 outi $E, r1
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37 outi $E, r0
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38 cmp r0, r5
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39 beq down
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40 resume
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41 add r3, r0, r0
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42 beq up
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43 ldim 5, r4
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44 done
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45 reti r13
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46 down
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47 ldim $BF, r3
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48 ldimh $F7, r3
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49 bra resume
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50 up
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51 ldim $41, r3
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52 ldimh $8, r3
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53 ldim 5, r4
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54 reti r13
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55