68000: introduce defines for the low byte of the page

We need this for some of the platforms so we can do a straight mov.b
from offset(a5) to the I/O register

diff --git a/Kernel/kernel-68000.def b/Kernel/kernel-68000.def
index 1071507..48f2c52 100644 (file)
--- a/Kernel/kernel-68000.def
+++ b/Kernel/kernel-68000.def
@@ -2,6 +2,7 @@
 
 #define U_DATA__U_PTAB         0
 #define U_DATA__U_PAGE         4
+#define U_DATA__U_PAGEB                5
 #define U_DATA__U_PAGE2                6
 #define U_DATA__U_INSYS                8
 #define U_DATA__U_CALLNO       9
@@ -25,6 +26,7 @@
 #define P_TAB__P_TTY_OFFSET    1
 #define P_TAB__P_PID_OFFSET    2
 #define P_TAB__P_PAGE_OFFSET   20
+#define P_TAB__P_PAGE_OFFSETB  21
 #define P_TAB__P_UDATA_OFFSET  24
 
 #define P_RUNNING              1