From: Leo C <erbl259-lmu@yahoo.de>
Date: Sun, 16 Feb 2020 22:38:43 +0000 (+0100)
Subject: Some comments (from master)
X-Git-Url: http://cloudbase.mooo.com/gitweb/ddt180.git/commitdiff_plain/e800d6bed1ffbe37835710a9224d5adb63a0e97a?hp=4b30a8eb66d5fe924e142f2a569e8d47dd45c14f

Some comments (from master)
---

diff --git a/ddt180.z80 b/ddt180.z80
index 28a2260..937faa6 100644
--- a/ddt180.z80
+++ b/ddt180.z80
@@ -1922,18 +1922,18 @@ bp_tst_@pc:
 	call	bpl_init
 
 	ld a,(ix+000h)
-	and 003h
-	jr z,bp_tst_e
+	and 003h		;User bp (temporary or permanent)?
+	jr z,bp_tst_e		;No, check next
 	ld e,(ix+002h)
 	ld d,(ix+003h)
 	ld hl,(reg.pc)
-	call cp_hl_de
-	ret z
+	call cp_hl_de		;Current PC is on a User bp
+	ret z			;Return zero
 bp_tst_e:
 	call	bpl_next
 	sub a
-	inc a
-	ret
+	inc a			;Not on a user bp
+	ret			;Return not zero
 
 bp_trace_enter:
 	call bp_get_freeslot
@@ -1971,7 +1971,6 @@ bp_set_to_mem:
 	inc hl
 	ld (hl),d
 l0a1dh:
-
 	call	bpl_next
 	ret
 
@@ -3869,6 +3868,7 @@ l208bh:
 	scf
 	ret
 
+;jr, djnz
 l2093h:
 	ld c,(iy+001h)
 	ld a,c
@@ -3912,6 +3912,8 @@ l20b8h:
 	jr z,l20dch
 	and a
 	ret
+
+;ret cc
 l20c5h:
 	ld a,(iy+000h)
 	ld (l20d7h),a
@@ -3929,6 +3931,7 @@ l20d7h:
 	inc hl
 	jp (hl)
 
+;ret
 l20dch:
 l20edh:
 	ld hl,(reg_sp)		;break on return address
@@ -3937,10 +3940,12 @@ l20edh:
 	ld d,(hl)
 	ex de,hl
 	call bp_trace_enter
+;rst 8
 l2115h:
 	and a
 	ret
 
+;rst n
 l20f9h:
 	ld a,(l0003h)
 	cp (iy+000h)