setmac routine is now slot-independent

2021-06-04 00:30:49 -04:00 · 2021-06-04 00:30:49 -04:00 · 238fc5de49
parent bc29b3621e
commit 238fc5de49
1 changed files with 9 additions and 2 deletions
--- a/apps/setmac/setmac.s
+++ b/apps/setmac/setmac.s
@ -160,13 +160,20 @@ Main1:  cld
        .byte   $8D                             ; CR
        hasc    "Uthernet-II SETMAC Utility"
        .byte   $8D,$00                         ; CR, done
+        lda     #5                              ; Slot 5
        jsr     setmac
        jmp     NextSys
 .endproc
 .proc   setmac
 ; Set the MAC address on the Uthernet-II
-; TODO: Hard-coded for slot 5.
-        ldy     $d5                          ; Slot 5 mode reg offset
+; Expects slot number in A
+        asl
+        asl
+        asl
+        asl
+        clc
+        adc     #$85
+        tay                                  ; Mode register offset
        lda     #$80                         ; Reset W5100
        sta     $bfff,y                      ; Store in MODE register
        lda     #$03                         ; Address autoinc, indirect