Initial

m68hc11/echo.asm

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+; File - Echo.asm - echo the character received back to the host.  Increment
+;                         it by one to prove it is not a local terminal echo.
+;$$$$$$$$$$$$$ - file set up for e2 series 68hc11 with eeprom at $f800
+;
+; Constants
+TDRE    equ     0080h
+RDRF    equ     0020h
+BAUD    equ     002bh
+SCCR1   equ     002ch
+SCCR2   equ     002dh
+SCSR    equ     002eh
+SCDR    equ     002fh
+        lds     00FFh             ; 8E,00,0F
+        ldx     1000h             ; CE,10,00
+        clr     ix,SCCR1          ; 6F,2C
+        ldd     330Ch             ; CC,33,0C
+        staa    ix,BAUD           ; A7,2B
+        stab    ix,SCCR2          ; E7,2D
+
+
+dssdfsd
+loop:
+        brclr  ix,SCSR,20h,loop   ; 1F,2E,20,FC    wait for RDRF
+        ldaa ix,SCDR              ; A6,2F          read next character
+        inca                      ; 4C             increment the character   
+loop2:
+        brclr ix,SCSR,80h,loop2   ; 1F,2E,80,FC
+        staa  ix,SCDR             ; A7,2F          echo back to host
+        jmp loop                  ; 7E,00,0F       continue
+
+
+
+