Difference between revisions of "SYMBiFACE II:I/O Map Summary"

Revision as of 03:16, 12 February 2010

Port	Read	Write
#7Fxx	N/A	Standard RAM Expansion (512K)
#FD00-#FD05	?	?
#FD06	IDE Alternate Status	IDE Digital Output
#FD07	IDE Drive Address	N/A
#FD08	IDE Data Register	IDE Data Register
#FD09	IDE Error Register	IDE (Write Precomp Reg.)
#FD0A	IDE Sector Count	IDE Sector Count
#FD0B	IDE Sector Number	IDE Sector Number
#FD0C	IDE Cylinder Low	IDE Cylinder Low
#FD0D	IDE Cylinder High	IDE Cylinder High
#FD0E	IDE SDH Register	IDE SDH Register
#FD0F	IDE Status Register	IDE Command Register
#FD10	PS/2 Mouse Status	N/A
#FD11	ROM Enable SYMBiFACE II Roms	ROM Disable SYMBiFACE II Roms
#FD12-#FD13	?	?
#FD14	RTC Data	RTC Data
#FD15	N/A	RTC Index
#FD16	?	?
#FD17	Map upper ROM to 4000h-7FFFh (for writing to FLASH ROMs)	Don't map ROM to 4000h-7FFFh (default)
#FD17-#FD3F	?	?

@@ Line 8: / Line 8: @@
 |'''#FD06''' ||IDE Alternate Status ||IDE Digital Output
 |-
-|'''#FD07''' ||IDE Drive Address ||Write: Not Used
+|'''#FD07''' ||IDE Drive Address ||N/A
 |-
 |'''#FD08''' ||IDE Data Register ||IDE Data Register
@@ Line 26: / Line 26: @@
 |'''#FD0F''' ||IDE Status Register ||IDE Command Register
 |-
-|'''#FD10''' ||PS/2 Mouse Status||Write: Not used
+|'''#FD10''' ||PS/2 Mouse Status||N/A
 |-
-|'''#FD11''' ||ROM Enable SYMBiFACE II roms||ROM Disable all SYMBiFACE II Roms
+|'''#FD11''' ||ROM Enable SYMBiFACE II Roms||ROM Disable SYMBiFACE II Roms
 |-
 |'''#FD12-#FD13''' ||? ||?
@@ Line 34: / Line 34: @@
 |'''#FD14''' ||RTC Data ||RTC Data
 |-
-|'''#FD15''' ||Read: Not used ||RTC Index
+|'''#FD15''' ||N/A ||RTC Index
 |-
 |'''#FD16''' ||? ||?
 |-
-|'''#FD17''' ||ROM Map upper ROM to 4000h-7FFFh (for writing to FLASH ROMs)||ROM Don't map ROM to 4000h-7FFFh (default)
+|'''#FD17''' ||Map upper ROM to 4000h-7FFFh <br> (for writing to FLASH ROMs)||Don't map ROM to 4000h-7FFFh (default)
 |-
 |'''#FD17-#FD3F''' ||? ||?
 |}