diff --git a/kernel/cards.68k b/kernel/cards.68k
index ae2e3a4..a71d413 100644
--- a/kernel/cards.68k
+++ b/kernel/cards.68k
@@ -2,6 +2,7 @@
 
 | Finds the first card with the type in d0.b, and returns it's IO base address in a0, or 0 if not found
 | Clobbers d1
+| Warning to developers: This function must only use PC-relative addressing as it is called from early boot before the kernel is properly mapped.
 find_first_card:
   move.l #0xff0000, a0 | a0 holds the address of the current card
 ffc_loop:
diff --git a/kernel/start.68k b/kernel/start.68k
index b34c668..db137ee 100644
--- a/kernel/start.68k
+++ b/kernel/start.68k
@@ -5,7 +5,7 @@ _start:
 move.l d0, d2 | Move the number of program headers to d2
 move.l a0, a1 | Move the program headaer pointer to a1
 move.b #0x5, d0 | Get the pointer to the MMU card
-bsr.w find_first_card_early
+jsr (find_first_card - 0xC00000)
 cmpa.l #0, a0 | Abort if there is no MMU card
 beq.w no_mmu
 subq.w #0x1, d2 | Adjust the number of program headers for dbra
@@ -59,23 +59,6 @@ jmp (higher_bridge - 0xC00000) | Jump to the lower-half equivalent of the bridgi
 no_mmu:
 stop #2700 | If there was no MMU card, halt the CPU
 
-| Finds the first card with the type in d0.b, and returns it's IO base address in a0, or 0 if not found
-| Clobbers d1
-find_first_card_early:
-  move.l #0xff0000, a0 | a0 holds the address of the current card
-ffc_early_loop:
-  lea (0x100, a0), a0 | Move to the next card
-  move.b (0xff, a0), d1 | Load the type of the card into d1
-  beq.b ffc_early_notfound | If the type is 0 (empty slot), we have scanned all cards, so exit the loop
-  cmp.b d0, d1 | If the card is the type we want, return with the address in a0
-  beq.b ffc_early_done
-  bra.b ffc_early_loop | Loop back and check the next card
-ffc_early_notfound:
-move.l #0x0, a0
-ffc_early_done:
-  rts
-
-
 .text
 higher_bridge:
 move.w #1, (0x14, a0) | Enable the MMU