Add banked ROM from slot 2 toggle

README.md

@@ -41,4 +41,13 @@ gymnastics of the IIe and beyond that moved Heaven and Earth to keep the entry p
  * Run that audio through CiderPress, which knows how to take tape audio and reconstruct data from it
  * Profit
 
-The source code to do these activities is in the `src` directory, and the resulting ROM from the Tiger Learning computer is in the `rom` directory.
+The source code to do these activities is in the `src` directory, and the resulting ROM from the Tiger Learning computer is in the `rom` directory.
+
+#### ROM contents
+
+The files [`C100.FFFF.bin`](https://github.com/david-schmidt/tlc-apple2/blob/master/rom/C100.FFFF.bin)
+and [`C100.FFFF.txt`](https://github.com/david-schmidt/tlc-apple2/blob/master/rom/C100.FFFF.txt)
+are binary and monitor dumps respectively of the ROM as seen normally (i.e. with no banking).
+The files [`C800-CFFF.bin`](https://github.com/david-schmidt/tlc-apple2/blob/master/rom/C800-CFFF.bin)
+and [`C800-CFFF.txt`](https://github.com/david-schmidt/tlc-apple2/blob/master/rom/C800-CFFF.txt)
+are the view of ROM in that region after swapping slot 2 in (i.e. `lda $cfff` and `lda $c200` just before dumping).

src/.gitignore

@@ -0,0 +1,3 @@
+/tapeout.o
+/tapeout.bin
+/tapeout.lst

src/make.bat

@@ -1,2 +1,2 @@
-ca65 tapeout.asm -l tapeout.lst
+ca65 tapeout.asm --listing
 ld65 tapeout.o -o tapeout.bin -C tapeout.cfg

src/slot2dump.txt

@@ -0,0 +1,18 @@
+This is the part you get to type in by hand if you
+have no other way to communicate to a machine.  
+This version swaps in slot 2 and dumps memory from
+$C200-$CFFF.
+
+When the sound output is complete, a "Z" will be 
+printed and you'll be back at the prompt.  (The
+original monitor code would print a Ctrl-G (beep),
+which is not desirable now.)
+
+300:A9 00 A0 C8 85 3C 84 3D A9 FF A0 CF 85 3E 84 3F 
+310:AD FF CF AD 00 C2 20 4C 03 60 A5 3C C5 3E A5 3D 
+320:E5 3F E6 3C D0 02 E6 3D 60 A0 4B 20 3B 03 D0 F9 
+330:69 FE B0 F5 A0 21 20 3B 03 C8 C8 88 D0 FD 90 05
+340:A0 32 88 D0 FD AC 30 C0 A0 2C CA 60 A9 40 20 29 
+350:03 A0 27 A2 00 41 3C 48 A1 3C 20 6C 03 20 1A 03 
+360:A0 1D 68 90 EE A0 22 20 6C 03 F0 09 A2 10 0A 20 
+370:36 03 D0 FA 60 A9 DA 4C ED FD

src/tapeout.asm

@@ -6,14 +6,20 @@
 
 .org $0300
 
+; Set up starting address ($C800)
         lda     #$00
-        ldy     #$03
+        ldy     #$c8
         sta     $3c
         sty     $3d
-        lda     #$00
-        ldy     #$04
+; Set up ending addresses ($CFFF)
+        lda     #$ff
+        ldy     #$cf
         sta     $3e
         sty     $3f
+; Swap in slot 2
+        lda     $cfff
+        lda     $c200
+; Dump it to speaker
         jsr     WRITE
         rts