From a54459d48672836bb5b7bead506af5157962f753 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9my=20GIBERT?= <burniouf@users.noreply.github.com>
Date: Wed, 12 Dec 2018 08:05:29 +0100
Subject: [PATCH] Kernel 0.92

---
 SYS/KERNEL.S.DEF.txt  |  2 +-
 SYS/KERNEL.S.TERM.txt | 96 +++++++++++++++++++++++++++----------------
 2 files changed, 62 insertions(+), 36 deletions(-)

diff --git a/SYS/KERNEL.S.DEF.txt b/SYS/KERNEL.S.DEF.txt
index 891a7bf6..d51dc321 100644
--- a/SYS/KERNEL.S.DEF.txt
+++ b/SYS/KERNEL.S.DEF.txt
@@ -144,7 +144,7 @@ S.TTY.DEVID		.EQ 0
 S.TTY.STATUS	.EQ 0
 
 S.TTY.TITLE		.EQ 48
-S.TTY.SCRBUF	.EQ 128
+S.TTY.SCRBUF	.EQ 128					24x80=1920 bytes
 *
 S.TTY			.EQ 2048
 *--------------------------------------
diff --git a/SYS/KERNEL.S.TERM.txt b/SYS/KERNEL.S.TERM.txt
index b48de875..0c54b973 100644
--- a/SYS/KERNEL.S.TERM.txt
+++ b/SYS/KERNEL.S.TERM.txt
@@ -13,8 +13,10 @@ ZPTmpWord		.EQ ZPDRV+4
 ZPTmpBool		.EQ ZPDRV+6
 ZPBufPtr		.EQ ZPDRV+8
 ZPCount			.EQ ZPDRV+10
-ZPBaseL1		.EQ ZPDRV+12
-ZPBaseL2		.EQ ZPDRV+14
+ZPBufBaseL1		.EQ ZPDRV+12
+ZPBufBaseL2		.EQ ZPDRV+14
+ZPScrBaseL1		.EQ ZPDRV+16
+ZPScrBaseL2		.EQ ZPDRV+18
 *--------------------------------------
 DRV.TERM		cld
 				>STYA pIOCTL
@@ -642,11 +644,14 @@ ClrScr			ldx #23
 
 				lda #" "
 
+				bit bActive
+				bpl .4
+				
 				sta SETWRITEAUX
 
 				ldy #39
 				
-.2				sta (ZPBaseL1),y		
+.2				sta (ZPScrBaseL1),y		
 				dey
 				bpl .2
 
@@ -654,10 +659,18 @@ ClrScr			ldx #23
 
 				ldy #39
 
-.3				sta (ZPBaseL1),y		
+.3				sta (ZPScrBaseL1),y		
 				dey
 				bpl .3
 
+.4				sta SETWRITEAUX
+
+				ldy #79
+				
+.5				sta (ZPBufBaseL1),y		
+				dey
+				bpl .5
+
 				dex
 				bpl .1
 				
@@ -915,16 +928,10 @@ SetCharAtYX		cmp #$40
 				pla
 				bcs .1
 				
-*				php
-*				sei
 				sta SETWRITEAUX
-.1				sta (ZPBaseL1),y
+.1				sta (ZPScrBaseL1),y
 				sta CLRWRITEAUX
-*				plp
 				rts
-				
-*.1				sta (ZPBaseL1),y
-*				rts	
 *--------------------------------------
 GetCharAtCurPos	ldy CH
 				ldx CV
@@ -937,46 +944,64 @@ GetCharAtYX		jsr SETUP.L1X
 				
 				bcs .1
 	
-*				php
-*				sei
 				sta SETREADAUX
-.1				lda (ZPBaseL1),y
+.1				lda (ZPScrBaseL1),y
 				sta CLRREADAUX
-*				plp
 				rts
-
-*.1				lda (ZPBaseL1),y
-*				rts	
 *--------------------------------------
 SETUP.L1X		lda SCR.BASEL,x
-				sta ZPBaseL1
+				clc
+				adc ZPTTYPtr
+				sta ZPBufBaseL1
 				lda SCR.BASEH,x
-				sta ZPBaseL1+1
-				rts
-*--------------------------------------
-COPY.XtoL1		lda SCR.BASEL,x
-				sta ZPBaseL2
-				lda SCR.BASEH,x
-				sta ZPBaseL2+1
+				adc ZPTTYPtr+1
+				sta ZPBufBaseL1+1
 				
-*				php
-*				sei
+				bit bActive
+				bpl .8
+
+				lda SCR.BASEL,x
+				sta ZPScrBaseL1
+				lda SCR.BASEH,x
+				sta ZPScrBaseL1+1
+.8				rts
+*--------------------------------------
+COPY.XtoL1		ldy #79
+
 				sta SETWRITEAUX
 				sta SETREADAUX
 				
-				jsr .1
+.1				lda (ZPBufBaseL2),y
+				sta (ZPBufBaseL1),y 
+				dey
+				bpl .1
+
+				sta CLRWRITEAUX
+				sta CLRREADAUX
+
+				bit bActive
+				bpl .8
+
+				lda SCR.BASEL,x
+				sta ZPScrBaseL2
+				lda SCR.BASEH,x
+				sta ZPScrBaseL2+1
+				
+				sta SETWRITEAUX
+				sta SETREADAUX
+				
+				jsr .6
 				
 				sta CLRWRITEAUX
 				sta CLRREADAUX
-*				plp
 
-.1				ldy #39
+.6				ldy #39
 				
-.2				lda (ZPBaseL2),y
-				sta (ZPBaseL1),y 
+.7				lda (ZPScrBaseL2),y
+				sta (ZPScrBaseL1),y 
 				dey
-				bpl .2
-				rts
+				bpl .7
+.8				rts
 *--------------------------------------
 Decimal.Out		stz ZPTmpWord
 				stz ZPTmpWord+1
@@ -1164,6 +1189,7 @@ SB.IS.NAWS		.DA #IAC,#SB,#TELOPT.NAWS,#SB.IS
 SB.IS.NAWS.LEN	.EQ *-SB.IS.NAWS
 *--------------------------------------
 bActive			.BS 1
+*--------------------------------------
 CH				.BS 1
 CV				.BS 1
 LWFLG			.BS 1