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Diffstat (limited to 'src/mess/machine/cs4031.c')
-rw-r--r--src/mess/machine/cs4031.c50
1 files changed, 25 insertions, 25 deletions
diff --git a/src/mess/machine/cs4031.c b/src/mess/machine/cs4031.c
index 60056017267..974697e2ce0 100644
--- a/src/mess/machine/cs4031.c
+++ b/src/mess/machine/cs4031.c
@@ -16,13 +16,13 @@
- 8254 timer
- MC14818 RTC
- TODO:
- - The chipset has the ability to intercept the GATEA20 and
- RESET commands sent to the 8042 keyboard controller,
- this is not emulated yet
- - No emulation of memory parity checks
- - Move IPC core to its own file so it can be shared with
- other chipsets
+ TODO:
+ - The chipset has the ability to intercept the GATEA20 and
+ RESET commands sent to the 8042 keyboard controller,
+ this is not emulated yet
+ - No emulation of memory parity checks
+ - Move IPC core to its own file so it can be shared with
+ other chipsets
***************************************************************************/
@@ -459,9 +459,9 @@ void cs4031_device::update_dma_clock()
//**************************************************************************
/*
- Check NMI sources and generate NMI if needed
+ Check NMI sources and generate NMI if needed
- Not emulated here: Parity check NMI
+ Not emulated here: Parity check NMI
*/
void cs4031_device::nmi()
{
@@ -774,10 +774,10 @@ WRITE_LINE_MEMBER( cs4031_device::kbrst_w )
}
/*
- Fast CPU reset and Gate A20
+ Fast CPU reset and Gate A20
- 0 - Fast CPU reset
- 1 - Fast Gate A20
+ 0 - Fast CPU reset
+ 1 - Fast Gate A20
*/
WRITE8_MEMBER( cs4031_device::sysctrl_w )
@@ -804,16 +804,16 @@ WRITE8_MEMBER( cs4031_device::sysctrl_w )
//**************************************************************************
/*
- "Port B" - AT-compatible port with miscellaneous information
-
- 0 - Timer 2 gate (rw)
- 1 - Speaker data (rw)
- 2 - Enable parity check (rw) [not emulated]
- 3 - Enable IOCHECK (rw)
- 4 - Refresh detect (r)
- 5 - Timer 2 output (r)
- 6 - Channel check latch (r)
- 7 - Parity check latch (r) [not emulated]
+ "Port B" - AT-compatible port with miscellaneous information
+
+ 0 - Timer 2 gate (rw)
+ 1 - Speaker data (rw)
+ 2 - Enable parity check (rw) [not emulated]
+ 3 - Enable IOCHECK (rw)
+ 4 - Refresh detect (r)
+ 5 - Timer 2 output (r)
+ 6 - Channel check latch (r)
+ 7 - Parity check latch (r) [not emulated]
*/
READ8_MEMBER( cs4031_device::portb_r )
@@ -845,10 +845,10 @@ WRITE8_MEMBER( cs4031_device::portb_w )
}
/*
- NMI mask and RTC address
+ NMI mask and RTC address
- 7 - NMI mask
- 6:0 - RTC address
+ 7 - NMI mask
+ 6:0 - RTC address
*/
WRITE8_MEMBER( cs4031_device::rtc_w )
{