From 60f96f32441b850d073d80758b7c9211538fb91c Mon Sep 17 00:00:00 2001
From: b1ackmai1er <difficultylevelhigh@gmail.com>
Date: Fri, 10 Jan 2020 20:11:19 +0800
Subject: [PATCH] Add cursor support fo VGA 80x43 mode

Align with VDU driver
---
 Source/HBIOS/vga.asm | 33 +++++++++++++++++++++++++++------
 1 file changed, 27 insertions(+), 6 deletions(-)

diff --git a/Source/HBIOS/vga.asm b/Source/HBIOS/vga.asm
index 30203a39..e6875dbb 100644
--- a/Source/HBIOS/vga.asm
+++ b/Source/HBIOS/vga.asm
@@ -21,6 +21,17 @@ VGA_HI		.EQU	VGA_BASE + $05	; BOARD RAM HI ADDRESS
 VGA_LO		.EQU	VGA_BASE + $06	; BOARD RAM LO ADDRESS
 VGA_DAT		.EQU	VGA_BASE + $07	; BOARD RAM BYTE R/W
 ;
+VGA_NOBL	.EQU	00000000B	; NO BLINK
+VGA_NOCU	.EQU	00100000B	; NO CURSOR
+VGA_BFAS	.EQU	01000000B	; BLINK AT X16 RATE
+VGA_BSLO	.EQU	01100000B	; BLINK AT X32 RATE
+;
+VGA_BLOK	.EQU	0		; BLOCK CURSOR
+VGA_ULIN	.EQU	1		; UNDERLINE CURSOR
+;
+VGA_CSTY	.EQU	VGA_BLOK	; DEFAULT CURSOR STYLE
+VGA_BLNK	.EQU	VGA_NOBL	; DEFAULT BLINK RATE
+;
 #IF (VGASIZ=V80X25)
 VGA_ROWS	.EQU	25
 VGA_COLS	.EQU	80
@@ -37,6 +48,16 @@ VGA_COLS	.EQU	80
 VGA_SCANL	.EQU	11
 #ENDIF
 ;
+#IF VGA_CSTY=VGA_BLOK
+VGA_R10		.EQU	(VGA_BLNK + $00)	
+VGA_R11		.EQU	VGA_SCANL-1
+#ENDIF
+;
+#IF VGA_CSTY=VGA_ULIN
+VGA_R10		.EQU	(VGA_BLNK + VGA_SCANL-1)	
+VGA_R11		.EQU	VGA_SCANL-1
+#ENDIF
+;
 #DEFINE		DEFREGS		REGS_VGA
 ;
 TERMENABLE	.SET	TRUE		; INCLUDE TERMINAL PSEUDODEVICE DRIVER
@@ -857,8 +878,8 @@ REGS_VGA:
 	.DB	6,25		; VERT DISP
 	.DB	7,25 + 0	; VERT DISP + VERT FP ROWS
 	.DB	9,16 - 1	; CHAR HEIGHT - 1
-	.DB	10,(13 | $60)	; CURSOR START & CURSOR BLINK
-	.DB	11,14		; CURSOR END
+	.DB	10,VGA_R10	; CURSOR START & CURSOR BLINK
+	.DB	11,VGA_R11	; CURSOR END
 	.DB	12,($0000 >> 8) & $FF	; SCRN 1 START (HI)
 	.DB	13,($0000 & $FF)	; SCRN 1 START (LO)
 	.DB	18,-1		; S2 ROW - 1
@@ -882,8 +903,8 @@ REGS_VGA:
 	.DB	6,30		; VERT DISP
 	.DB	7,30 + 0	; VERT DISP + VERT FP ROWS
 	.DB	9,16 - 1	; CHAR HEIGHT - 1
-	.DB	10,109		; CURSOR START & CURSOR BLINK
-	.DB	11,14		; CURSOR END
+	.DB	10,VGA_R10	; CURSOR START & CURSOR BLINK
+	.DB	11,VGA_R11	; CURSOR END
 	.DB	12,0		; SCRN 1 START (HI)
 	.DB	13,0		; SCRN 1 START (LO)			
 	.DB	18,-1		; S2 ROW - 1
@@ -906,8 +927,8 @@ REGS_VGA:
 	.DB	6,43		; VERT DISP
 	.DB	7,43 + 0	; VERT DISP + VERT FP ROWS
 	.DB	9,11 - 1	; CHAR HEIGHT - 1
-	.DB	10,109		; CURSOR START & CURSOR BLINK
-	.DB	11,14		; CURSOR END
+	.DB	10,VGA_R10	; CURSOR START & CURSOR BLINK
+	.DB	11,VGA_R11	; CURSOR END
 	.DB	12,0		; SCRN 1 START (HI)
 	.DB	13,0		; SCRN 1 START (LO)			
 	.DB	18,-1		; S2 ROW - 1