adapted SCREEN rioutine to MEGA65 native mode

src/basic/basic_commands_02/cmd_sysinfo.s

@@ -73,6 +73,23 @@ print_sysinfo_banner:
 	ldx #IDX__STR_SI_HDR_VID
 	jsr print_packed_misc_str
 
+	jsr JSCREEN
+	
+	phy
+	lda #$00
+	jsr print_integer
+
+	lda #$58
+	jsr JCHROUT	
+
+	ply
+	tya
+	tax
+	lda #$00
+	jsr print_integer
+
+	jsr print_space
+
 	ldx #IDX__STR_NTSC
 	lda TVSFLG
 	beq !+

src/basic/board_m65/mega65_imports.s

@@ -23,6 +23,7 @@
 .label JCHKIN                          = KERNAL_0.JCHKIN
 .label JCHRIN                          = KERNAL_0.JCHRIN
 .label JREADST                         = KERNAL_0.JREADST
+.label JSCREEN                         = KERNAL_0.JSCREEN
 .label SELDEV                          = KERNAL_0.SELDEV
 .label M65_ISMODE65                    = KERNAL_0.M65_ISMODE65
 .label M65_SETWIN_XY                   = KERNAL_0.M65_SETWIN_XY