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annotate timer.s16 @ 52:cb078b3b23e8

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Update timer example
author Michael Pavone <pavone@retrodev.com>
date Wed, 31 Aug 2016 20:33:29 -0700
parents fb14515266f4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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25
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1 ldim vectors, r0
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2 setvbr r0
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
3 ;current color value
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
4 ldim 0, r0
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
5 ;color increment
52
cb078b3b23e8 Update timer example
Michael Pavone <pavone@retrodev.com>
parents: 25
diff changeset
6 ldim $41, r3
cb078b3b23e8 Update timer example
Michael Pavone <pavone@retrodev.com>
parents: 25
diff changeset
7 ldimh $8, r3
cb078b3b23e8 Update timer example
Michael Pavone <pavone@retrodev.com>
parents: 25
diff changeset
8 ;Palette RAM address/length
cb078b3b23e8 Update timer example
Michael Pavone <pavone@retrodev.com>
parents: 25
diff changeset
9 ldim 1, r1
25
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
10 ;enable interrupt
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
11 ori 1, sr
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
12 ;Timer Value
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
13 ldim $FF, r2
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
14 ldimh $FF, r2
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
15 outi $A, r2
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
16 wait
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
17 bra wait
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
18 ;shouldn't get here, disable timer so it's clear something broke
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
19 ldim 0, r2
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
20 outi $A, r2
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
21 bra wait
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
22
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
23 vectors:
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
24 dc.w timer_handler
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
25
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
26 timer_handler
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
27 outi $E, r1
52
cb078b3b23e8 Update timer example
Michael Pavone <pavone@retrodev.com>
parents: 25
diff changeset
28 outi $E, r0
25
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
29 add r3, r0, r0
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
30 reti r4
fb14515266f4 Implemented timer and timer interrupts. Added get/setvbr instructions. Fixed assembler bug. Moved mnemonics into a separate source file
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
31