Intel 80L188EC 사용자 설명서
INTEL 186 EB/EC EVALUATION BOARD USER’S MANUAL
6-6
6.5.20 WRITE_WPORT (Code 19H)
This command stores the least-significant word of the RISM_DATA register in the 16-bit
output port pointed to by the RISM_ADDR register.
output port pointed to by the RISM_ADDR register.
6.5.21 STEP (Code 1AH)
This command sets the target processor’s TRAP_FLAG and the RUN_FLAG and steps one
instruction. After setting these flags, the action of this command is similar to the
START_USER command followed by a TRAP.
instruction. After setting these flags, the action of this command is similar to the
START_USER command followed by a TRAP.
6.5.22 READ_REG (Code 1BH)
This command reads the word value of a CPU register pointed to by the most-significant
word of the RISM_DATA register and places the result in the least-significant word of the
RISM_DATA register. Registers are accessed as shown in Table 6-2:
word of the RISM_DATA register and places the result in the least-significant word of the
RISM_DATA register. Registers are accessed as shown in Table 6-2:
6.5.23 WRITE_REG (Code 1CH)
This command stores the least-significant word of the RISM_DATA register in the CPU register
pointed to by the most-significant word of the RISM_DATA register. Registers are accessed as
shown in Table 6-2.
pointed to by the most-significant word of the RISM_DATA register. Registers are accessed as
shown in Table 6-2.
Table 6-2. iRISM Registers
MSW of RISM_DATA
Register
0000H
SS
0001H
ES
0002H
DS
0003H
DI
0004H
SI
0005H
BP
0006H
SP
0007H
BX
0008H
DX
0009H
CX
000AH
AX
000BH
IP
000CH
CS
000DH
FLAGS