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tv912.cpp: Small update (nw)

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AJR 2018-01-20 17:23:38 -05:00
parent ba8b3ef772
commit 8d540d5f9c
1 changed files with 3 additions and 1 deletions
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src/mame/drivers/tv912.cpp
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@ -19,6 +19,8 @@
framing of data bits. Position 8 (NB2) is deliberately disconnected on framing of data bits. Position 8 (NB2) is deliberately disconnected on
later revisions to restrict communications to 7 or 8 data bits, likely later revisions to restrict communications to 7 or 8 data bits, likely
because of known incompatibilities between UART models in 5-bit data mode. because of known incompatibilities between UART models in 5-bit data mode.
(For reasons that are less clear, the 19,200 baud option is also commonly
omitted from documentation.)
The baud rate switches (S1/S3) are mounted vertically at the rear of the The baud rate switches (S1/S3) are mounted vertically at the rear of the
unit. As these are connected directly to the frequency outputs of the baud unit. As these are connected directly to the frequency outputs of the baud
@ -362,7 +364,7 @@ static INPUT_PORTS_START( switches )
PORT_BIT(0x23, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x23, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("HALFDUP") PORT_START("HALFDUP")
PORT_DIPNAME(0x01, 0x01, "Communication Mode") PORT_DIPLOCATION("S2:3") PORT_DIPNAME(0x01, 0x01, "Conversation Mode") PORT_DIPLOCATION("S2:3")
PORT_DIPSETTING(0x00, "Half Duplex") PORT_DIPSETTING(0x00, "Half Duplex")
PORT_DIPSETTING(0x01, "Full Duplex") PORT_DIPSETTING(0x01, "Full Duplex")