diff --git a/rom/debug.asm b/rom/debug.asm
index 7bce37f..c00725d 100644
--- a/rom/debug.asm
+++ b/rom/debug.asm
@@ -102,7 +102,7 @@ loop:	; show prompt
 	; read data
 	mov byte [inmin], 1
 	mov byte [inmax], 16
-	mov word [ingetc], getc
+	mov word [ingetc], getcu
 	call gets
 	pushf
 	call crlf
@@ -142,11 +142,11 @@ return:	; restore stack pointer
 	; Expects DI to mark end of command
 runcmd:	mov si, inbuf
 	lodsb
-	cmp al, 'g'
+	cmp al, 'G'
 	je cmd_g
-	cmp al, 'r'
+	cmp al, 'R'
 	je cmd_r
-	cmp al, 't'
+	cmp al, 'T'
 	je cmd_t
 	cmp al, '?'
 	je cmd_?
@@ -156,9 +156,9 @@ cerr:	mov al, '?'
 
 cmd_?:	mov si, .txt
 	jmp putcs
-.txt:	db "g       Go", 0x0A, 0x0D
-	db "r       Print register values", 0x0A, 0x0D
-	db "t       Single-Step", 0x0A, 0x0D
+.txt:	db "G       Go", 0x0A, 0x0D
+	db "R[r]    Print register values", 0x0A, 0x0D
+	db "T       Single-Step", 0x0A, 0x0D
 	db 0
 
 cmd_g:	and word [reg_fl+1], 0xfe