B69000 Asiliant Technologies, B69000 Datasheet - Page 109

• Manufacturer Part Number: B69000
• Manufacturer: Asiliant Technologies

Specifications of B69000

• Lead Free Status / Rohs Status: Supplier Unconfirmed

9-16
CR0B
read/write at I/O address 3B5h/3D5h with index at address 3B4h/3D4h set to 0Bh
This cursor is the text cursor that is part of the VGA standard and should not be confused with the hardware
cursor and popup (cursor 1 and cursor 2), which are intended to be used in graphics modes. This register
is entirely ignored in graphics modes.
7
6-5
4-0
&+,36
Reserved
7
Reserved
Text Cursor Skew
Specifies the degree to which the start and end of each horizontal line of pixels making up the cursor
is delayed to compensate for internal pipeline delays.
These 2 bits describe the delay in terms of a number of character clocks.
Text Cursor End
These 5 bits specify which horizontal line of pixels within a character box is to be used to display
the last horizontal line of the cursor in text mode. The horizontal lines of pixels within a character
box are numbered from top to bottom, with the top-most line being number 0. The value specified
by these 5 bits should be the number of the last horizontal line of pixels on which the cursor is to be
shown.
69000 Databook
Text Cursor End Register
Text Cursor Skew
6
5
Bits
6 5
0 0
0 1
1 0
1 1
Subject to Change Without Notice
CRT Controller Registers
delayed by 2 character clocks
delayed by 3 character clocks
delayed by 1 character clock
4
Amount of Delay
no delay
3
Text Cursor End
2
Revision 1.3 8/31/98
1
0