From 263ae3ceb17339c99ccea751b9c06651a694ff5e Mon Sep 17 00:00:00 2001
From: Greg King <gregdk@users.sf.net>
Date: Mon, 23 Dec 2013 11:48:58 -0500
Subject: [PATCH 1/2] Made the CBM stdin consoles echo '\n' to the screen.

That fix makes Commodore platforms be consistent with other platforms' consoles.
---
 libsrc/cbm/read.s | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/libsrc/cbm/read.s b/libsrc/cbm/read.s
index 92d7ac6da..6227f7e0a 100644
--- a/libsrc/cbm/read.s
+++ b/libsrc/cbm/read.s
@@ -1,5 +1,6 @@
 ;
-; Ullrich von Bassewitz, 16.11.2002
+; 2002-11-16, Ullrich von Bassewitz
+; 2013-12-18, Greg King
 ;
 ; int read (int fd, void* buf, unsigned count);
 ;
@@ -7,7 +8,7 @@
         .export         _read
         .constructor    initstdin
 
-        .import         SETLFS, OPEN, CHKIN, BASIN, CLRCH, READST
+        .import         SETLFS, OPEN, CHKIN, BASIN, CLRCH, BSOUT, READST
         .import         rwcommon
         .import         popax
         .importzp       ptr1, ptr2, ptr3, tmp1, tmp2, tmp3
@@ -59,6 +60,11 @@
         lda     fdtab-LFN_OFFS,x; Get flags for this handle
         bmi     eof
 
+; Remember the device number.
+
+        ldy     unittab-LFN_OFFS,x
+        sty     unit
+
 ; Valid lfn. Make it the input file
 
         jsr     CHKIN
@@ -69,8 +75,13 @@
 
 @L0:    jsr     BASIN
         sta     tmp1            ; Save the input byte
+        ldx     unit
+        bne     @L0_1           ; Not keyboard/screen-editor
+        cmp     #$0D            ; Is it a Carriage Return?
+        bne     @L0_1
+        jsr     BSOUT           ; Yes, echo it (because editor didn't)
 
-        jsr     READST          ; Read the IEEE status
+@L0_1:  jsr     READST          ; Read the IEEE status
         sta     tmp3            ; Save it
         and     #%10111111      ; Check anything but the EOI bit
         bne     devnotpresent   ; Assume device not present
@@ -138,4 +149,10 @@ invalidfd:
 .endproc
 
 
+;--------------------------------------------------------------------------
+
+.bss
+
+unit:   .res    1
+
 

From 50c626d02b014b885905caaa2beeffc8e9c9b4ba Mon Sep 17 00:00:00 2001
From: Greg King <gregdk@users.sf.net>
Date: Mon, 23 Dec 2013 12:20:28 -0500
Subject: [PATCH 2/2] Avoided a reload by using a second register.

---
 libsrc/cbm/read.s | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libsrc/cbm/read.s b/libsrc/cbm/read.s
index 6227f7e0a..aa692a34a 100644
--- a/libsrc/cbm/read.s
+++ b/libsrc/cbm/read.s
@@ -1,6 +1,6 @@
 ;
 ; 2002-11-16, Ullrich von Bassewitz
-; 2013-12-18, Greg King
+; 2013-12-23, Greg King
 ;
 ; int read (int fd, void* buf, unsigned count);
 ;
@@ -52,12 +52,13 @@
         adc     #LFN_OFFS       ; Carry is already clear
         tax
         lda     fdtab-LFN_OFFS,x; Get flags for this handle
+        tay
         and     #LFN_READ       ; File open for writing?
         beq     invalidfd
 
 ; Check the EOF flag. If it is set, don't read anything
 
-        lda     fdtab-LFN_OFFS,x; Get flags for this handle
+        tya                     ; Get flags again
         bmi     eof
 
 ; Remember the device number.