From fecee2418b6aea15008ed6d3a856d202d59a5cdb Mon Sep 17 00:00:00 2001
From: Leo C
Date: Thu, 30 Apr 2015 20:34:28 +0200
Subject: Remove memory test and bank manager.

First phys. 64K block contains common and system (debugger).
Banks for user progs (CP/M) can be assigned from 0x10000.
---
 z180/config.inc | 44 ++++++++++++++++++++++++++++++++------------
 1 file changed, 32 insertions(+), 12 deletions(-)

(limited to 'z180/config.inc')

diff --git a/z180/config.inc b/z180/config.inc
index 390d3bc..ed98656 100644
--- a/z180/config.inc
+++ b/z180/config.inc
@@ -1,13 +1,19 @@
+
+FALSE	equ	0
+TRUE	equ	NOT FALSE
+
 ;-----------------------------------------------------
 ; CPU and BANKING types
 
 
-CPU_Z180	equ	1		; 0 = Z80, else Z180
-ROMSYS		equ	0
+CPU_Z180	equ	TRUE
+CPU_Z80		equ	FALSE
+
+ROMSYS		equ	FALSE
 
 AVRCLK		equ	18432		;[KHz]
 
-	if CPU_Z180
+    if CPU_Z180
 
 ;-----------------------------------------------------
 FOSC		equ	AVRCLK/2	;Oscillator frequency [KHz]
@@ -26,8 +32,21 @@ PRT_TC10MS	equ	PHI / (PRT_PRE/10)
 ;-----------------------------------------------------
 ; MMU
 
-SYS$CBAR	equ	0C8h
-USR$CBAR	equ	0F0h
+COMMON_SIZE	equ	4*1024		;Common Area size in bytes
+					;must be multiple of 4K
+
+if (COMMON_SIZE mod 1000h) 
+	.printx COMMON_SIZE not multiple of 4K!
+	end	;stop assembly
+endif
+
+CSK	equ	COMMON_SIZE/1000h	;
+CA	equ	10h - CSK		;common area start
+BA	equ	0			;banked area start
+
+SYS$CBR		equ	0
+SYS$CBAR	equ	CA<<4 + CA	;CBAR in system mode
+USR$CBAR	equ	CA<<4 + BA	;CBAR in user mode (CP/M)
 
 
 BANKS		equ	18		;max nr. of banks
@@ -37,7 +56,8 @@ BANKS		equ	18		;max nr. of banks
 CREFSH		equ	0		;Refresh rate register (disable refresh)
 CWAITIO		equ	3 shl IWI0	;Max I/O Wait States, 0 Memory Wait States
 
-	else	; Z80
+    endif 		;CPU_Z180
+    if	CPU_Z80
 
 PHI		equ	AVRCLK/5	;CPU frequency [KHz]
 BAUDCLCK	equ	AVRCLK/10	;Baudrate clock [KHz]
@@ -71,16 +91,16 @@ CTC3	EQU	0f7h
 ;    600	3072	 16	192
 ;    300	6144	 64	 92
 
-	endif	; CPU_Z180
+    endif	; CPU_Z80
 
-	if	ROMSYS
+    if	ROMSYS
 c$rom		equ	0a5h
 ROM_EN		equ	0C0h
 ROM_DIS		equ	ROMEN+1
-	if CPU_Z180
+     if CPU_Z180
 CWAITROM 	equ	2 shl MWI0
-	endif
-	endif
+     endif
+    endif
 
 
 DRSTNUM 	equ	30h		;DDTZ Restart vector (breakpoints)
@@ -100,7 +120,7 @@ AVRINT6		equ	5Fh
 ;PMSG		equ	80h
 
 ;-----------------------------------------------------
-; Definition of (locical) top 2 memory pages
+; Definition of (logical) top 2 memory pages
 
 sysram_start	equ	0FE00h
 stacksize	equ	80
-- 
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