MB86296 Datasheet, PDF (298/352 Pages) Fujitsu Component Limited. – PCI Graphics Controller Specification

FUJITSU LIMITED PRELIMINARY AND CONFIDENTIAL
13.2.9 Line drawing registers
Each register is used by the drawing commands. The registers cannot be accessed from the CPU or
by using the SetRegister command.
(Coordinates setting register)
Register Address 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LPN 0140H 0 0 0 0
Int
0
LXs 0144H S S S S
Int
Frac
LXde 0148H S S S S S S S S S S S S S S S Int
Frac
LYs 014cH S S S S
Int
Frac
LYde 0150H S S S S S S S S S S S S S S S Int
Frac
LZs 0154H S
Int
Frac
LZde 0158H S
Int
Frac
Address
S
0
Int
Frac
Offset from DrawBaseAddress
Sign bit or sign extension
Not used or 0 extension
Integer or integer part of fixed point data
Fraction part of fixed point data
Sets coordinates parameters for line drawing
LPN
Pixel count of principal axis direction
LXs
X coordinates start position of draw line
(In principal axis X) Integer value of X coordinates rounded off
(In principal axis Y) X coordinates in form of fixed point data
LXde
Inclination data for X coordinates
(In principal axis X) Increment or decrement according to drawing direction
(In principal axis Y) Fraction part of DX/DY
LYs
Y coordinates start position of draw line
(In principal axis X) Y coordinates in form of fixed point data
(In principal axis Y) Integer value of Y coordinates rounded off
LYde
Inclination data for Y coordinates
(In principal axis X) Fraction part of DY/DX
(In principal axis Y) Increment or decrement according to drawing direction
LZs
Z coordinates start position of line drawing line
LZde
Z Inclination
MB86296S<Coral-PA>
288
Specification Manual Rev0.1