more work on MEGA65 specific CHRIN

src/aliases/,aliases_cpu.s

@@ -97,6 +97,16 @@
 #endif
 
 
+//
+// Some additional 65C02 instructions
+//
+
+#if HAS_OPCODES_65C02
+
+.pseudocommand inc_a { .byte $1A }
+.pseudocommand dec_a { .byte $3A }
+
+#endif
 
 //
 // Some additional 65CE02 instructions

src/aliases/,aliases_ram_lowmem.s

@@ -147,7 +147,7 @@
 	.label BLNCT     = $CD  //          cursor blink countdown
 	.label GDBLN     = $CE  //          cursor saved character
 	.label BLNON     = $CF  //          cursor visibility flag
-	.label CRSW      = $D0  //          whether to input from screen or keyboard
+	.label CRSW      = $D0  //          whether to input from screen or keyboard (if from screen, stores input offset)
 	.label PNT       = $D1  // $D1-$D2  pointer to the current screen line
 	.label PNTR      = $D3  //          current screen X position (logical column), 0-79
 	.label QTSW      = $D4  //          quote mode flag

src/aliases/,aliases_ram_lowmem_m65.s

@@ -24,8 +24,9 @@
 	// Page 0 - other reused values
 	//
 
-	.label M65__TXTROW   = TBLX //          screen row
-	.label M65__TXTCOL   = PNTR //          screen column
+	.label M65__TXTROW   = TBLX  //         screen row
+	.label M65__TXTCOL   = PNTR  //         screen column
+	.label M65__SCRINPUT = LSXP  //         pointer to the screen input, within the screen segment
 
 	//
 	// Pages 4-7 - reused screen memory
@@ -44,7 +45,7 @@
 	.label M65_COLVIEW      = $588 // $588-$589  first byte of color memory viewport
 	.label M65_COLVIEWMAX   = $58A // $58A-$58B  largest allowed value of M65_COLVIEW
 	.label M65_SCRMODE      = $58C //            0 = 40x25, 1 = 80x25, 2 = 80x50 
-	.label M64_SCRWINMODE   = $58D //            $00 = normal mode, $FF = window enabled
+	.label M65_SCRWINMODE   = $58D //            $00 = normal mode, $FF = window enabled
 	.label M65_TXTWIN_X0    = $58E //            text window - top-left X coordinate, starting from 0
 	.label M65_TXTWIN_Y0    = $58F //            text window - top-left Y coordinate, starting from 0
 	.label M65_TXTWIN_X1    = $590 //            text window - bottom-right X coordinate + 1