Mitsubishi Electric LS Pro Hardware Technical Reference page 128

Extension The CL-GD5410 video controller has a number of Extension registers. By default these
registers registers are accessed using the Graphics Controller index and data registers.
The extension registers are listed in tables which follow. A full description of the
registers is included in the manufacturers data sheet and is not reproduced here.
Design revision
Reserved
Alternate extension decode high
Alternate extension decode low
Reserved
Scratch register 5-0
Attribute and graphics control
Cursor attributes
Graphics controller memory latches 0-3
Reserved
RAMDAC controls
Graphics and attribute test
Reserved
Memory map
1. This area is occupied by the ROM in the option ROM socket if it is fitted.
The 5410 BIOS is integrated with the system BIOS in the F0000h to FFFFFh region.
All the code in the region E0000h to EFFFFh region is used only at boot. Thus with
the option ROM socket empty the region from C0000h to EFFFFh is available as DOS
UMB space.
Revision C system board
100000
1M
BIOS and
5410 BIOS
F0000
960K
GRAPHICAL BOOT
SETUP and
SECURITY
E4000
912K
82596 RPL
E0000
896K
BUS
MEMORY
784K C4000
NOTE 1
C0000
768K
LS PRO HARDWARE TECHNICAL REFERENCE B/3
AA
AC-AD
AE
AF
B0-B9
BA-BF
C0
C1
C2-C5
C6-C7
C8
C9
CA-DF