SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 144

• Manufacturer Part Number: SPC8106
• Description: LCD/CRT VGA CONTROLLER
• Manufacturer: S-MOS Systems

bits 7-0
bits 7-0
bits 7-0
bits 7-0
Hardware Functional Specification
1A Scratch Register 0 RW
Scratch
Register
Bit 7
1B Scratch Register 1 RW
Scratch
Register
Bit 7
1C Relative Start Address High Register RW
Relative Start
Address High
Bit 7
1D Relative Start Address Low Register RW
Relative Start
Address Low
Bit 7
SP1-102
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
Scratch
Register
Bit 6
Scratch
Register
Bit 6
Relative
Start
Address
High
Bit 6
Relative
Start
Address Low
Bit 6
Scratch Register Bits [7:0]
These read/write bits have no effect in hardware.
Scratch Register Bits [7:0]
These read/write bits have no effect in hardware.
Relative Start Address High Bits [7:0]
This register contains the 8 most significant bits of the 16-bit Relative Start Address of the screen
buffer. The start address of the screen buffer is the sum of the 17-bit CRTC start address and the
16-bit Relative Start Address.
Relative Start Address Low Bits [7:0]
This register contains the 8 least significant bits of the 16-bit Relative Start Address of the screen
buffer. The start address of the screen buffer is the sum of the 17-bit CRTC start address and the
16-bit Relative Start Address.
Scratch
Register
Bit 5
Scratch
Register
Bit 5
Relative
Start
Address
High
Bit 5
Relative
Start
Address Low
Bit 5
Scratch
Register
Bit 4
Scratch
Register
Bit 4
Relative
Start
Address
High
Bit 4
Relative
Start
Address Low
Bit 4
X12-SP-001-07
Scratch
Register
Bit 3
Scratch
Register
Bit 3
Relative
Start
Address
High
Bit 3
Relative
Start
Address Low
Bit 3
Scratch
Register
Bit 2
Scratch
Register
Bit 2
Relative
Start
Address
High
Bit 2
Relative
Start
Address Low
Bit 2
Scratch
Register
Bit 1
Scratch
Register
Bit 1
Relative
Start
Address
High
Bit 1
Relative
Start
Address Low
Bit 1
Scratch
Register
Bit 0
Scratch
Register
Bit 0
Relative
Start
Address
High
Bit 0
Relative
Start
Address Low
Bit 0
411-1.0
SPC8106