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Notes:15-in-1 (KS-122)

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This page contains notes for the game 15-in-1 (KS-122).

Source Code

The source code at 0x3010 isn't as corrupt as it looks. There are some parts that seem to have been overwritten, but many of the unprintable characters are actually tokenized opcodes or other symbols for the assembler.

Also, the second "L" in "PINBALL" and the "R" in "DESTROYER" have their 7th bit set for an unknown reason.

Here is a partial reconstruction of what the symbols mean. The ones marked "??" always follow operations from a command in the same row, but have an unknown purpose. Other speculative definitions marked with "?".

Two-Byte Tokens

Second byte
First Byte 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
83 BCC rel
84 BCS rel
85 BPL rel
86 BNE rel ??
87 BEQ rel
88
89
8A
8B
8C
8D
8E
8F
90
91
92
93
94
95
96
97
98
99 CLC impl
9A CLV impl
9B
9C DEX impl
9D DEY impl
9E
9F INY impl
A0
A1 PHA impl
A2 PLA impl
A3
A4
A5 RTS impl
A6
A7
A8
A9
AA SEI impl
AB
AC TAX impl
AD TAY impl
AE
AF
B0 TXS impl
B1 TYA impl
B2
B3
B4
B5
B6
B7
B8
B9
BA
BB
BC
BD
BE
BF
C0 ADC abs ADC #
C1 AND #
C2 ORA #
C3
C4 CMP #
C5 CPX #
C6 CPY #
C7 DEC zpg ?? ??
C8
C9 INC zpg ?? ?? ??
CA JMP abs
CB JSR abs ??
CC
CD LDA abs LDA # ?? ?? LDA ind,Y LDA abs,X LDA abs,Y ?? ?? ??
CE LDX # LDX abs,Y
CF LDY LDY # ??
D0 STA zpg ?? ?? STA abs,Y ?? ?? ?? ??
D1
D2 STY abs
D3
D4
D5
D6
D7 ASL A

One-Byte Tokens

Byte Token
D8 .addr
D9 =
DA .org?
DB Max size of section?
DC =
E0 End of file?
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