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Diffstat (limited to 'src/mame/machine/namco53.c')
-rw-r--r--src/mame/machine/namco53.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/src/mame/machine/namco53.c b/src/mame/machine/namco53.c
index bb71a86ad33..f4dcd8b201d 100644
--- a/src/mame/machine/namco53.c
+++ b/src/mame/machine/namco53.c
@@ -2,9 +2,9 @@
Namco 53XX
- This instance of the Fujitsu MB8843 MCU is programmed to act as an I/O
+ This instance of the Fujitsu MB8843 MCU is programmed to act as an I/O
device. It is used by just two games: Dig Dug and Pole Position.
-
+
MOD0-MOD2 = input mode
CS0-CS3 = chip select lines used to select 1 of 4 input sources
OUT0-OUT7 = 8-bit final output data
@@ -39,7 +39,7 @@
MOD selects one of 8 modes in which the input data is interpreted.
- Pole Position is hard-wired to use mode 0, which reads 4 steering
+ Pole Position is hard-wired to use mode 0, which reads 4 steering
inputs and 4 DIP switches (only 1 of each is used). The steering
inputs are clocked on P0 and direction on P1, 1 bit per analog input.
The DIP switches are connected to P2 and P3.
@@ -47,8 +47,8 @@
Dig Dug can control which mode to use via the MOD bit latches. It sets
these values to mode 7 when running.
- Unknowns:
- SO is connected to IOSEL on Pole Position
+ Unknowns:
+ SO is connected to IOSEL on Pole Position
***************************************************************************/