SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 155

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

bits 7-0
Sprite/HW Cursor Registers
bits 7-0
SPC8106
15 Vertical Non-Display Period Register RW (if AUX[00] bit 0 = 1)
Vertical
Non-Display
Period Bit 8
CRT Controller Index/Data Register
3B4/D4h RW 3B5/D5h RW
n/a
30 Sprite/HW Cursor X Position High Register RW
n/a
31 Sprite/HW Cursor X Position Low Register RW
Sprite/HW
Cursor X
Pos’n Bit 7
bits 1-0
the Sprite/Hardware Cursor registers are accessed via the CRTC index/data registers (3B4/3D4
and 3B5/3D5), at index 30h - 3Fh.
411-1.0
Vertical
Non-Display
Period Bit 7
n/a
n/a
Sprite/HW
Cursor X
Pos’n Bit 6
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
Vertical Non-Display Period Bits [7:0]
The value of this register specifies the size of the non-display period in the number of lines minus 2.
For example; a value of 0 indicates 2 non-display period lines.
Sprite/HW Cursor X Position Bits [9:8]
This register contains the most significant two bits of the current horizontal left-most displayed pixel
position of the sprite or hardware cursor.
Sprite/HW Cursor X Position Bits [7:0]
This register contains the least significant eight bits of the current horizontal left-most displayed
pixel position of the sprite or hardware cursor.
Vertical
Non-Display
Period Bit 6
CRT
Controller
Index Bit 5
n/a
Sprite/HW
Cursor X
Pos’n Bit 5
Vertical
Display
Period Bit 5
CRT
Controller
Index Bit 4
n/a
Sprite/HW
Cursor X
Pos’n Bit 4
Non-
X12-SP-001-07
Vertical
Non-Display
Period Bit 4
CRT
Controller
Index Bit 3
n/a
Sprite/HW
Cursor X
Pos’n Bit 3
Vertical
Non-Display
Period Bit 3
CRT
Controller
Index Bit 2
n/a
Sprite/HW
Cursor X
Pos’n Bit 2
Hardware Functional Specification
Vertical
Non-Display
Period Bit 2
CRT
Controller
Index Bit 1
Sprite/HW
Cursor X
Pos’n Bit 9
Sprite/HW
Cursor X
Pos’n Bit 1
Vertical
Non-Display
Period Bit 1
CRT
Controller
Index Bit 0
Sprite/HW
Cursor X
Pos’n Bit 8
Sprite/HW
Cursor X
Pos’n Bit 0
SP1-113