Mysterious Program in EPROM of Synertek SYM-1 Owned by Composer Richard Teitelbaum (like KIM-1)

Here's the disassembly of the program we found (I've tasked a student with reverse engineering it; $ACxx addresses are memory-mapped I/O):

C000 A9 01 LDA #$01
C002 8D 03 AC STA $AC03
C005 A9 FF LDA #$FF
C007 8D 02 AC STA $AC02
C00A A9 01 LDA #$01
C00C 8D 0C AC STA $AC0C
C00F A9 00 LDA #$00
C011 8D 03 A8 STA $A803
C014 A9 FF LDA #$FF
C016 8D 02 A8 STA $A802
C019 A9 88 LDA #$88
C01B 8D 0C A8 STA $A80C
C01E A9 01 LDA #$01
C020 85 31 STA $31
C022 A9 00 LDA #$00
C024 85 33 STA $33
C026 85 2F STA $2F
C028 85 39 STA $39
C02A 85 3A STA $3A
C02C A9 00 LDA #$00
C02E 85 30 STA $30
C030 A2 08 LDX #$08
C032 AD 0D AC LC032 LDA $AC0D
C035 4A LSR A
C036 4A LSR A
C037 90 F9 BCC LC032
C039 AD 00 AC LDA $AC00
C03C 49 FF EOR #$FF
C03E 8D 00 AC STA $AC00
C041 AD 01 AC LDA $AC01
C044 29 80 AND #$80
C046 85 34 STA $34
C048 A9 00 LC048 LDA #$00
C04A 06 39 ASL $39
C04C 90 02 BCC LC050
C04E 09 01 ORA #$01
C050 06 3A LC050 ASL $3A
C052 90 02 BCC LC056
C054 09 02 ORA #$02
C056 A8 LC056 TAY
C057 AD 0D AC LC057 LDA $AC0D
C05A 29 10 AND #$10
C05C F0 F9 BEQ LC057
C05E 98 TYA
C05F 4D 00 AC EOR $AC00
C062 8D 00 AC STA $AC00
C065 06 30 ASL $30
C067 06 2F ASL $2F
C069 AD 01 AC LDA $AC01
C06C 29 80 AND #$80
C06E C5 34 CMP $34
C070 F0 04 BEQ LC076
C072 E6 30 INC $30
C074 E6 2F INC $2F
C076 A5 31 LC076 LDA $31
C078 F0 11 BEQ LC08B
C07A A5 2F LDA $2F
C07C C9 FD CMP #$FD
C07E D0 0B BNE LC08B
C080 A9 00 LDA #$00
C082 A2 00 LDX #$00
C084 85 33 STA $33
C086 85 31 STA $31
C088 4C 8E C0 JMP LC08E
C08B CA LC08B DEX
C08C D0 A4 BNE LC032
C08E E6 33 LC08E INC $33
C090 A5 33 LDA $33
C092 C9 10 CMP #$10
C094 D0 0E BNE LC0A4
C096 A5 30 LDA $30
C098 C9 FD CMP #$FD
C09A F0 04 BEQ LC0A0
C09C A9 01 LDA #$01
C09E 85 31 STA $31
C0A0 A9 00 LC0A0 LDA #$00
C0A2 85 33 STA $33
C0A4 A5 30 LC0A4 LDA $30
C0A6 8D 00 A8 STA $A800
C0A9 A9 00 LDA #$00
C0AB 85 30 STA $30
C0AD A2 08 LDX #$08
C0AF AD 0D AC LC0AF LDA $AC0D
C0B2 4A LSR A
C0B3 4A LSR A
C0B4 90 F9 BCC LC0AF
C0B6 AD 00 AC LDA $AC00
C0B9 49 FF EOR #$FF
C0BB 8D 00 AC STA $AC00
C0BE AD 01 AC LDA $AC01
C0C1 29 80 AND #$80
C0C3 85 34 STA $34
C0C5 AD 0D A8 LC0C5 LDA $A80D
C0C8 29 02 AND #$02
C0CA F0 F9 BEQ LC0C5
C0CC AD 01 A8 LDA $A801
C0CF 85 39 STA $39
C0D1 AD 0D A8 LC0D1 LDA $A80D
C0D4 29 02 AND #$02
C0D6 F0 F9 BEQ LC0D1
C0D8 AD 01 A8 LDA $A801
C0DB 85 3A STA $3A
C0DD 4C 48 C0 JMP LC048
.END

;auto-generated symbols and labels
LC032 $C032
LC050 $C050
LC056 $C056
LC057 $C057
LC076 $C076
LC08B $C08B
LC08E $C08E
LC0A4 $C0A4
LC0A0 $C0A0
LC0AF $C0AF
LC0C5 $C0C5
LC0D1 $C0D1
LC048 $C048

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