YMF744B Datasheet, PDF (11/60 Pages) List of Unclassifed Manufacturers – DS-1S

YMF744B
00-01h: Vendor ID
Read Only
Default: 1073h
Access Bus Width: 8, 16, 32-bit
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
Vendor ID
b[15:0] ........Vendor ID
This register contains the YAMAHA Vendor ID registered in Revision 2.2. This register is hardwired to
1073h.
02-03h: Device ID
Read Only
Default: 0010h
Access Bus Width: 8, 16, 32-bit
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
Device ID
b[15:0] ........Device ID
This register contains the Device ID of DS-1S. This register is hardwired to 0010h.
04-05h: Command
Read / Write
Default: 0000h
Access Bus Width: 8, 16, 32-bit
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
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- SER - PER -
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- BME MS IOS
b0................IOS: I/O Space
This bit is a dummy one that is capable of writing. This bit indicates for BIOS or OS that DS-1S
includes I/O devices.
b1................MS: Memory Space
This bit enables DS-1S to response to Memory Space Access.
“0”: DS-1S ignores Memory Space Access.
(default)
“1”: DS-1S responds to Memory Space Access.
b2................BME: Bus Master Enable
This bit enables DS-1S to act as a master device on the PCI bus.
“0”: Do not set DS-1S to be the master device.
(default)
“1”: Set DS-1S to be the master device.
February 3, 1999
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