Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-06-03 03:16:30 +03:00
Code Issues Actions 4 Packages Projects Releases Wiki Activity

(MESS) cat.c: comment updates (nw)

Browse Source
This commit is contained in:
Jonathan Gevaryahu 2014-09-14 04:58:04 +00:00
parent f05c0c621d
commit 6e98286ab1
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/mess/drivers/cat.c
View File

@ -856,7 +856,6 @@ READ16_MEMBER( cat_state::cat_wdt_r )
// 0x860000: 'tcb' "test control bits" test mode register; what the bits do is
// unknown. 0x0000 is written here to disable test mode, and that is the extent
// of the cat touching this register.
// it is possible that writing ANYTHING here will set the PFAIL state from 0 to 1, assuming the guessed information about pfail above is correct.
WRITE16_MEMBER( cat_state::cat_tcb_w )
{
#ifdef DEBUG_TEST_W
@ -909,7 +908,7 @@ a23 a22 a21 a20 a19 a18 a17 a16 a15 a14 a13 a12 a11 a10 a9 a8 a7 a6 a5 a4
0 1 0 0 0 R {'fd.status'} Floppy status lines (write protect, ready, index, track0)
0 1 0 1 0 R Keyboard Column Read
0 1 1 0 0 W? Unknown (reads as 0x00)
0 1 1 1 0 RW Read: Battery status (MSB bit, 0 = ok, 1 = dead, other bits read as 0)/Write: Centronics Printer and Keyboard LED/Country Code Related
0 1 1 1 0 RW {'pr.cont'} Read: Battery status (MSB bit, 0 = ok, 1 = dead, other bits read as 0)/Write: Centronics Printer and Keyboard LED/Country Code Related
1 x x x 0 W? Unknown (reads as 0x00)
1 0 0 x x 0 0 1 x x x x x x x x x x x * * * * 1 RW {'duart'} 68681 DUART at ic34 [controlled via GA2 /DUARTCS]
1 0 0 x x 0 1 0 x x x x x x x x x x * * * * * 0 RW {'modem'} Modem Chip AMI S35213 @ IC37 DATA BIT 7 ONLY [controlled via GA2 /SMCS]