Справочник Пользователя для IBM 500
SurePOS 500 4846-XX5 Technical Reference
Page 27 of 63
768-831 KB
C0000-CFFFF
64 KB
Video BIOS ROM (shadowed)
832-835 KB
D0000-D0FFF
4 K
Network ROM boot loader
836-895 KB
D0FFF-EFFFF
124 KB
Free for EMM386
896 – 959KB
E0000-EFFFF
64KB
Free for EMM386
960 KB - 1MB
F0000-FFFFF
64 KB
System ROM BIOS
1- 16 MB
100000-FFFFFF
15 MB
PCI/ISA Space
16 MB – 4095.5
GB
GB
1000000-FFF7FFFF
4079.5 MB
OS, PCI adapter memory decode, etc.
4095.5 MB -
4096 MB
4096 MB
FFF80000-FFFFFFF
512 KB
System ROM BIOS (ISA Bus)
3.9 COM
Port
Setup
Physical
UART
UART
Tailgate
Port
Name
Port
Name
Function
Connector
Type
Type
Location Notes
Default
I/O and
IRQ
I/O and
IRQ
UART1 COM1
Available to
user
user
RJ45
Rear
Tailgate
Tailgate
BDA COM1
3F8/4
UART2 COM2
Available to
user
user
RJ45
Rear
Tailgate
Tailgate
BDA COM2
2F8/3
UART3 COM3
Available to
user
user
RJ45
Rear
Tailgate
Tailgate
COM6 2E0/11
Distributed
VFD
connection
VFD
connection
DB15 F
Rear
Tailgate
Tailgate
Integrated
VFD
connection
VFD
connection
Custom Tower
Top
BDA COM4
Only one of integrated or
distributed VFD may be
enabled at the same time.
CMOS Setup allows
selection.
Only one of integrated or
distributed VFD may be
enabled at the same time.
CMOS Setup allows
selection.
UART4 Dist-VFD
8051 1
Internal
Internal
Communications with 8051
for EEPROM, cash drawer,
and LCD control.
for EEPROM, cash drawer,
and LCD control.
2E8/6
UART5 n/a
MSR
connection
connection
RJ45
Tablet Side
BDA COM3
3E8/5
UART6 n/a
Touch
Internal
Internal
COM5
Resources hardcoded to
2F0h/IRQ 7
Resources hardcoded to
2F0h/IRQ 7
2D8/7
3.10 Video Modes
Supported VGA Video Display Modes
Video
Mode
Mode
Pixel
Resolution
Resolution
Color
Depth
(bpp)
Depth
(bpp)
Mode
Type
Type
Display
Adapter
Adapter
Font
Size
Size
Character
Resolution
Resolution
Dot
Cloc
k
(MHz
)
Cloc
k
(MHz
)
Horiz.
Freq.
(KHz)
Freq.
(KHz)
Vert
Freq(Hz)
Freq(Hz)
Video
Memory
(KBytes)
Memory
(KBytes)
1
Information for communicating with the 8051 can be found in the Bryce I/O Subsystem Microcontroller Firmware
Specification.