diff --git a/snes/sysinfo.a65 b/snes/sysinfo.a65
new file mode 100644
index 0000000..7478bb5
--- /dev/null
+++ b/snes/sysinfo.a65
@@ -0,0 +1,91 @@
+#include "memmap.i65"
+
+; sysinfo.a65: display sysinfo text block
+.byt "===SHOW_SYSINFO==="
+show_sysinfo:
+	php
+	sep #$20 : .as
+	rep #$10 : .xl
+	stz bar_wl
+	dec bar_wl
+	stz bar_xl
+	dec bar_xl
+	stz bar_yl
+	dec bar_yl
+	jsr backup_screen
+	lda #^text_mm_sysinfo
+	sta window_tbank
+	ldx #!text_mm_sysinfo
+	stx window_taddr
+	lda @sysinfo_win_x
+	sta window_x
+	inc
+	inc
+	pha
+	stz print_x+1
+	lda @sysinfo_win_y
+	sta window_y
+	inc
+	inc
+	pha
+	stz print_y+1
+	lda @sysinfo_win_w
+	sta window_w
+	lda @sysinfo_win_h
+	sta window_h
+	jsr draw_window
+	stz print_pal
+sysinfo_printloop:
+	sep #$20 : .as
+	rep #$10 : .xl
+	lda #CMD_SYSINFO
+	sta @AVR_CMD
+	lda #^SYSINFO_BLK
+	ldx #!SYSINFO_BLK
+	sta print_bank
+	stx print_src
+	stz print_pal
+	pla
+	sta print_y
+	pla
+	sta print_x
+	lda #40
+	sta print_count
+	lda #13
+-	pha
+	jsr hiprint
+	inc print_y
+	rep #$20 : .al
+	lda print_src
+	clc
+	adc #40
+	sta print_src
+	sep #$20 : .as
+	pla
+	dec
+	bne -
+-	lda isr_done
+	lsr
+	bcc -
+	jsr printtime
+	jsr read_pad
+	lda #$80
+	and pad1trig
+	bne +
+	lda #$80
+	and pad1trig+1
+	bne +
+	lda @sysinfo_win_x
+	inc
+	inc
+	pha
+	lda @sysinfo_win_y
+	inc
+	inc
+	pha
+	jmp sysinfo_printloop
++	plp
+	jsr restore_screen
+	lda #$ff
+	sta @AVR_CMD
+	rtl