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-rw-r--r--src/mame/drivers/superqix.cpp9
1 files changed, 5 insertions, 4 deletions
diff --git a/src/mame/drivers/superqix.cpp b/src/mame/drivers/superqix.cpp
index 7fd622917a5..2577334ce22 100644
--- a/src/mame/drivers/superqix.cpp
+++ b/src/mame/drivers/superqix.cpp
@@ -25,10 +25,11 @@ Super Qix:
- The sq07.ic108 ROM came from a bootleg where the 8751 MCU was replaced by an
8031 MCU plus an external ROM (i.e. the sqixb1 romset). The 8031 ROM was bad
(bit 3 was stuck high). It was originally recovered by carefully checking
- the disassembly, and this repair was later verified from another dump to be
- correct. The majority of the bootleg 8031 MCU code matches the decapped
- sqixu b03__03.l2 mcu code, implying the sq07.ic108 8031 MCU code ROM was
- derived from code dumped from an original Taito b03__03.l2 8751 MCU somehow.
+ the disassembly, and this repair was later verified from another dump of an
+ intact chip to be correct. The majority of the bootleg 8031 MCU code matches
+ the deprotected sqix b03__03.l2 MCU code, implying the sq07.ic108 8031 MCU
+ code ROM was derived from code dumped from an original Taito b03__03.l2 8751
+ MCU somehow.
The bootleg MCU code is different from the original b03__03.l2 MCU since
an 8031 when running in external ROM mode cannot use ports 0 or 2, hence
the code was extensively patched by the bootleggers to avoid use of those