From e6a80a69d57f0591c5f03c3ee5195c02bc5c2bfd Mon Sep 17 00:00:00 2001
From: Neal Andrew Crook <neal@pippaluk.org.uk>
Date: Thu, 28 Jul 2016 20:43:59 +0100
Subject: [PATCH] Add defines for all 3 UARTs.

---
 Kernel/platform-multicomp09/multicomp09.s |  6 +++---
 Kernel/platform-multicomp09/platform.def  | 14 +++++++++++---
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/Kernel/platform-multicomp09/multicomp09.s b/Kernel/platform-multicomp09/multicomp09.s
index bf1c7737..d4b4433e 100644
--- a/Kernel/platform-multicomp09/multicomp09.s
+++ b/Kernel/platform-multicomp09/multicomp09.s
@@ -481,9 +481,9 @@ map_for_swap
 ;;;   returns: nothing
 outchar:
 	pshs    b,cc
-vdubiz  ldb     UARTSTA
+vdubiz  ldb     UARTSTA0
         bitb    #2
-        beq     vdubiz	; busy
+        beq     vdubiz	 ; busy
 
-	sta	UARTDAT	; ready, send character
+	sta	UARTDAT0 ; ready, send character
 	puls	b,cc,pc
diff --git a/Kernel/platform-multicomp09/platform.def b/Kernel/platform-multicomp09/platform.def
index a9ac230a..827944b3 100644
--- a/Kernel/platform-multicomp09/platform.def
+++ b/Kernel/platform-multicomp09/platform.def
@@ -41,6 +41,14 @@ SDLBA1         equ $FFDB	; not used here
 SDLBA2	       equ $FFDC	; not used here
 
 
-;;; vdu/virtual UART registers
-UARTDAT		equ $ffd1
-UARTSTA		equ $ffd0
+;;; Port0, tty1: vdu/virtual UART registers - default boot console
+UARTDAT0	equ $ffd1
+UARTSTA0	equ $ffd0
+
+;;; Port1, tty2: UART registers - additional console
+UARTDAT1	equ $ffd1
+UARTSTA1	equ $ffd0
+
+;;; Port2, tty3: UART registers - drivewire link to server
+UARTDAT2	equ $ffd1
+UARTSTA2	equ $ffd0
-- 
2.34.1