From: cuz <cuz@b7a2c559-68d2-44c3-8de9-860c34a00d81>
Date: Fri, 22 Nov 2002 00:52:49 +0000 (+0000)
Subject: Rename segment named NMI to LOWCODE
X-Git-Tag: V2.12.0~2062
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=4b8a20fee6a91ae686f8f70d9400dd0ec3d55fb8;p=cc65

Rename segment named NMI to LOWCODE


git-svn-id: svn://svn.cc65.org/cc65/trunk@1571 b7a2c559-68d2-44c3-8de9-860c34a00d81
---

diff --git a/libsrc/c128/crt0.s b/libsrc/c128/crt0.s
index b7309c9c2..5a66cd753 100644
--- a/libsrc/c128/crt0.s
+++ b/libsrc/c128/crt0.s
@@ -24,15 +24,10 @@ IRQInd		= $2FD	; JMP $0000 - used as indirect IRQ vector
 
 ; ------------------------------------------------------------------------
 ; Place the startup code in a special segment to cope with the quirks of
-; c128 banking. Do also create an empty segment named "NMI" to avoid
-; warnings if the rs232 routines are not used.
-
-.segment        "NMI"
-; empty
+; c128 banking.
 
 .segment       	"STARTUP"
 
-; ------------------------------------------------------------------------
 ; BASIC header with a SYS call
 
 	.org	$1BFF
@@ -172,13 +167,12 @@ L2:	lda	zpsave,x
 ; above will change this setting so that we have RAM from $0000-$BFFF. This
 ; works quite well with the exception of interrupts: The interrupt handler
 ; is in ROM, and the ROM switches back to the ROM configuration, which means
-; that parts of our program may not be accessible. Since the crt0 module is
-; the first module in the program, it will always be below $4000 and always
-; in RAM. So we place several short stubs here that switch back our ROM
-; config before calling our user defined handlers. These stubs are only
-; used if any other code uses the interrupt or break vectors. They are dead
-; code otherwise, but since there is no other way to keep them in low memory,
-; they have to go here.
+; that parts of our program may not be accessible. To solve this, we place
+; the following code into a special segment called "LOWCODE" which will be
+; placed just above the startup code, so it goes into a RAM area that is
+; not banked.
+
+.segment        "LOWCODE"
 
 IRQStub:
 	cld    	       		   	; Just to be sure
@@ -192,7 +186,7 @@ IRQStub:
 	jsr	condes 		   	; Call the functions
 	pla    	       			; Get old register value
 	sta    	MMU_CR
-       	jmp    	IRQInd			; Jump to the save IRQ vector
+       	jmp    	IRQInd			; Jump to the saved IRQ vector
 
 
 BRKStub:
diff --git a/libsrc/c128/rs232.s b/libsrc/c128/rs232.s
index a2f3a5001..821890224 100644
--- a/libsrc/c128/rs232.s
+++ b/libsrc/c128/rs232.s
@@ -535,17 +535,17 @@ _rs232_status:
 ; Because of the C128 banking, the NMI handler must go into the non banked
 ; memory, since the ROM NMI entry point will switch to a configuration where
 ; only the lowest 16K of RAM are visible. We will place the NMI handler into
-; it's own segment and map this segment into the lower 16K in the linker
+; the LOWCODE segment and map this segment into the lower 16K in the linker
 ; config.
 
-.segment 	"NMI"
+.segment       	"LOWCODE"
 
 NmiHandler:
 	lda	#CC65_MMU_CFG		;(2)
-     	sta	MMU_CR			;(4)
+     	sta	MMU_CR 			;(4)
        	lda    	ACIA+RegStatus       	;(4) ;status ;check for byte received
      	and 	#$08           		;(2)
-     	beq 	@L9			;(2*)
+     	beq 	@L9    			;(2*)
        	lda    	ACIA+RegStatus       	;(4) opt ;status ;check for receive errors
     	and 	#$07           		;(2) opt
        	beq    	@L1            		;(3*)opt
@@ -553,7 +553,7 @@ NmiHandler:
 @L1:	lda 	ACIA+RegData		;(4) ;data  ;get byte and put into receive buffer
     	ldy 	RecvTail 		;(4)
     	ldx 	RecvFreeCnt  	       	;(4)
-      	beq 	@L3  			;(2*)
+      	beq 	@L3    			;(2*)
     	sta 	RecvBuf,y 		;(5)
     	inc 	RecvTail             	;(6)
     	dec 	RecvFreeCnt          	;(6)
@@ -588,15 +588,15 @@ NmiHandler:
 ; Try to send a byte. Internal routine. A = TryHard
 
 TryToSend:
-   	sta 	tmp1	       	; Remember tryHard flag
+   	sta 	tmp1   	       	; Remember tryHard flag
 @L0:   	lda 	SendFreeCnt
     	cmp 	#$ff
-    	beq 	@L3	       	; Bail out
+    	beq 	@L3    	       	; Bail out
 
 ; Check for flow stopped
 
 @L1:	lda 	Stopped
-       	bne    	@L3	       	; Bail out
+       	bne    	@L3    	       	; Bail out
 
 ;** check that swiftlink is ready to send