S y s t e m m a n a g e m e n t c a r d s
13/4
SRAM Page Register 123h (write only)
This controls the SRAM paging. All bits are cleared on reset.
Bits
Function
7:2
n/a
1:0
SRAM page (0 ® 3)
Status Register
This register contains miscellaneous control bits. All bits are cleared on reset.
Bits
Function
7:4
4-way switch pack : read only, 0 = on
3
Flash RDY line : read only, 1 = ready
2
n/a
DiagP, IOCHCK# line : read only
DiagP NMI# line : read only
Management UART (COM3 or COM4)
This is a standard 16550-compatible serial port, occupying 8 contiguous
bytes. The Management UART interrupt is software selectable (Apricot
Control Register) to be IRQ10, IRQ14 or IRQ15. The serial interface uses
TTL levels.
Diagnostic UART
This is a standard 16550 compatible serial port, occupying 8 contiguous
bytes. The UART interrupt is software selectable (Apricot Control Register)
to be IRQ10, IRQ14 or IRQ15. The serial interface uses TTL levels.
Diagnostic Processor
The Diagnostic Processor has its own power-on reset, as it holds the entire
motherboard in reset while its firmware initialises.
Port 0 : Input data port
The data source is selected via port 2.
Bits
Function
7:0
Port 80 diagnostic code (Port 0 : Input Port)
3
Ambient Temperature: 1 = over temperature
(System Status Monitor)
2:0
Fan fail; 1=fail (System Status Monitor)
Port 1
Bits
Function
4
Motherboard reset - active high
Summary of Contents for APRICOT FT4200
Page 1: ...FT4200 Owner s Handbook NATIONAL ACCREDITATION OFCERTIFICATION BODIES ...
Page 2: ...APRICOT FT4200 OWNER S HANDBOOK ...
Page 10: ...APRICOT FT4200 Section One Startup and operating Upgrading and expansion ...
Page 36: ...APRICOT FT4200 Section Two Detailed service Information for authorised engineers ...