;
;org 08000h
cmdbuf equ | 08000h |
| ||
pbuffr equ | 08020h |
| ||
|
|
| ||
org |
| 0 |
| ; RESET vector |
RSTISR |
| proc | near |
|
jmp |
| cc_UC, mon | ; branch to monitor | |
RSTISR |
| endp | near |
|
org |
| 00008h |
| ; NMI vector |
NMISR |
| proc | near |
|
jmp |
| cc_UC, mon | ; branch to monitor | |
NMISR |
| endp | near |
|
; |
|
|
| |
org | 01000h |
|
| |
; |
|
|
| |
; | ||||
MON proc |
| near |
|
|
mov |
| SYSCON, #0F800h ; #1111 1000 | ||
;0000 0000 b nop
mov | SYSCON, #0F800h ; #1111 1000 |
|
; 0000 0000 b |
| |
nop |
|
|
; |
| |
| ;0xFA 0x00 0x10 0x80 ; jmps far 1000h ; |
|
(jump to next1) ; far intersegment jump to update CPS |
| |
| ;next1: |
|
| dw 000FAh |
|
next1: | dw 01010h |
|
|
| |
; |
| |
mov | DPP0, #0 |
|
. |
|
|
. |
|
|
( no changes to the code here ) |
| |
. |
|
|
. |
|
|
; | message | |
strings
;
EVEN msggreet:
db 0ah, 0dh,
.
.
.
( no changes to the code here )
As mentioned, the address of register SYSCON is different (89h) in the C167. The instruction setting the SYSCON register is a move instruction. In machine code, the instruction takes four bytes: E6h, 89h, 00h, F8h, which may be
