0 - the first floppy drive.

1 - the second floppy drive.

file.bas - BASIC program.

file.bin - Machine language program.

To load a machine language program called "file.bin":
loadm"file.bin

The execute (start) a machine language program:
exec

To load a BASIC program called "file.bas":
load"file.bas

Run the BASIC program by typing:
run

To run an autoexecuting BASIC file:
run"file.bas

List the files and directories on a disk:
dir

To change to drive 3:
drive 3

To format the disk in drive 0 :
dskini0

To list the lines of a BASIC program in memory:
list

Deleting "file.ext":
kill file.ext

To copy "file.ext" to drive 1
copy file.ext to 1

Clear the screen:
cls

Copying the disk in the first floppy drive to the blank disk in the second drive:
backup 0 to 1

Double the MHz rating of your CoCo II (overclock command):
poke 65495,0

Set the MHz rating of your CoCo II back to normal:
poke 65494,0

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MORE COMMANDS:

To change the video mode to its inverse (CoCo III only):
[ALT] [RESET]

Double the MHz rating of your CoCo III (overclock command):
poke 65497,0

INFORMATION:

CoCo II - 64K RAM
- 6809 Motorola CPU 16-bit internal ; 8-bit external architecture.
- 64 colour palette. 4 colours at a time.
- max res of 256x192

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CoCo III - 128K or 512K RAM
- 68B09E Motorola CPU 16-bit Internal ; 8-bit external architecture.
- Additional registers, and faster operational speeds (more transistors).
- Max Resolution of 640x200 in 4 colours. 320x200 16 colours. Palette of 64 colours.

More powerful operating systems are OS/9 Level 1 and 2, by Microware.
(OS/9 is a pre-emptive multitasking O/S, and has a bit of a cult following).
Newer versions of OS/9 are currently used for industrial/robotics purposes.
Note: This has nothing to do with MacOS.

Think of the CoCo 3 as a more-powerful version of the hardware used to
run the Joust coin-op. This computer is essentially the same thing, with
the ability to operate faster and display more colors. One wonders why no
one took the time to write carbon copies of the Williams arcade games on it....

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WJB