M69030 Asiliant Technologies, M69030 Datasheet - Page 127

• Manufacturer Part Number: M69030
• Manufacturer: Asiliant Technologies

Specifications of M69030

• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Rad Hardened: No
• Lead Free Status / Rohs Status: Supplier Unconfirmed

5
4-0
`efmp

Count By 4
Underline Location
69030 Databook
0: The memory address counter is incremented either every character clock or every other
character clock, depending upon the setting of bit 3 of the CRT Mode Control Register.
1: The memory address counter is incremented either every 4 character clocks or every 2
character clocks, depending upon the setting of bit 3 of the CRT Mode Control Register.
Note: This bit is used in conjunction with bit 3 of the CRT Mode Control Register (CR17)
to select the number of character clocks are required to cause the memory address counter
to be incremented as shown, below:
These 5 bits specify which horizontal line of pixels in a character box is to be used to display
a character underline 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 horizontal line on which the character underline
mark is to be shown.
CR14
Bit 5
0
0
1
1
CR17
Bit 3
0
1
0
1
CRT Controller Registers
Address Incrementing Interval
every 2 character clocks
every 4 character clocks
every 2 character clocks
every character clock
Revision 1.3 11/24/99
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