Ram Data Registers (Ramd, Ramdh, Ramdl); Table 15-16. Ram Data Register (Ramd); Table 15-17. Ram Data Register High (Ramdh) - IBM A2 User Manual

User's Manual
A2 Processor
Bits Function
48:51 Recoverable Error Counter
52:54 T0_DBA
55:57 T1_DBA
58:60 T2_DBA
61:63 T3_DBA

15.3.9 Ram Data Registers (RAMD, RAMDH, RAMDL)

Table 15-16. Ram Data Register (RAMD)

Register Short Name:
Register Address:
Initial Value:
Bits Function
0:63 Ram Data(0 to 63)

Table 15-17. Ram Data Register High (RAMDH)

Register Short Name:
Register Address:
Initial Value:
Bits Function
0:31 Reserved
32:63 Ram Data(0 to 31)
SCOM Accessible Registers
Page 726 of 864
Initial
Value
0 This 4-bit counter increments whenever an unmasked recoverable error
occurs. When the count value reaches 15, an error bit is set in FIR1.
The count value can be read to obtain the current value or written to pre-
set or clear it.
Note: Write access to the Recoverable Error Counter is only supported
through the RW SCOM address.
000 Additional actions that can be selected when a debug compare event
occurs for the indicated thread (sets DBCR0[EDM] status bit).
Debug Action Select:
000
000
001
010
000 011
100
000 101
110
111
RAMD
x'2D' RW
0x0000000000000000
Initial
Value
0 When in Ram mode, the results of any instruction operation are written to the Ram Data Reg-
isters.
Provides read/write control over the Ram Data Registers in implementations supporting 64-bit
access.
The Ram Data Registers are updated upon activation of RAMC
RAMDH
x'2E' RW
0x0000000000000000
Initial
Value
0
0 When in Ram mode, the results of any instruction operation are written to the Ram Data Reg-
isters.
The Ram Data Registers are updated upon activation of RAMC
Description
No action.
Reserved (no action).
Stop specified thread.
Stop all threads.
Activate error signal (sets FIR1[52:55] for the appropriate
thread).
Activate external signal (ac_an_debug_trigger pulse).
Activate external signal and stop specified thread.
Activate external signal and stop all threads.
Access:
Scan Ring:
Description
Access:
Scan Ring:
Description
RW
func
.
Done
RW
func
.
Done
Version 1.3
October 23, 2012