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author | 2022-05-06 20:50:47 -0400 | |
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committer | 2022-05-06 20:50:47 -0400 | |
commit | 5e81f34bf33eab610240a69fbbec5b3f44dbebf6 (patch) | |
tree | a022109b9f351a31c9d6db4e342b6fdf7ec6936d /src/devices/cpu/v620 | |
parent | 61aacfef75a2be26a04716bb19bddd1d04a773c2 (diff) |
v620dasm.cpp: Add comment
Diffstat (limited to 'src/devices/cpu/v620')
-rw-r--r-- | src/devices/cpu/v620/v620dasm.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/devices/cpu/v620/v620dasm.cpp b/src/devices/cpu/v620/v620dasm.cpp index e050bb9463e..74af4537df8 100644 --- a/src/devices/cpu/v620/v620dasm.cpp +++ b/src/devices/cpu/v620/v620dasm.cpp @@ -56,6 +56,8 @@ static const char *const s_index_tags[2] = static const char *const s_reg_names[8] = { "A", "B", "X", "R3", "R4", "R5", "R6", "R7" + // A, B and X are legacy names for V75's R0, R1 and R2. These may also be written as plain + // numbers, though 1 = R2 and 2 = R1 to remain compatible with older indexing syntax. }; static const char *const s_reg_mem_ops[4] = |