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Text File | 1994-01-07 | 5.5 KB | 125 lines | [ttro/ttxt] |
- Serial Mouse Driver
- ©1992, 1993 Charles Rentmeesters
-
- CDware. If you use this software, you've probably saved a bundle on getting a
- IBM type serial mouse, so spend a few bucks more and send me a CD. Either
- Musical CD's or CDROM's. Send me something unique, send me something
- original. If you're in a foreign country send me a CD in your native language.
- Of course, if you don't have the time to send me a CD, a donation of about $10
- is just as accepted.
- Send to:
- Charles Rentmeesters
- 410 N Carroll St
- Madison, WI 53703-1804
- USA
-
- I'd love to hear your suggestions. Email address:
- rentmees@cae.wisc.edu
-
- What is it?
- This cdev/init allows you to connect a IBM type serial mouse to your
- Macintosh, and use that instead of the standard Macintosh mouse. It works
- with Microsoft and Mouse Systems compatible mice. (just about the only two
- types of serial mice that are out there). You can even use IBM type serial
- trackballs with it! Connect the mouse up to one of the serial ports of your
- Macintosh, and drop this cdev/init into your System folder. Use the control
- panel or System 7 to set-up the mouse driver. This allows you to set up
- which port the mouse is connected to, and what type of mouse it is. It also
- allows you to modify the event the mouse sends for each of the mouse
- buttons. Software written using the Symantic Think C compiler, and tested
- on a Macintosh IIci running system 7.1.
-
- Connecting up the Serial Mouse:
- To connect the serial mouse up to your Macintosh, you will need a serial
- cable. Some serial mice can just use a standard modem serial cable that you
- can buy from many computer stores. If that doesn't work, you can make your
- own serial cable for the mouse. A common symptom of not working with the
- standard serial modem cable is that the mouse buttons will work, but the
- mouse will not move. This happens when the mouse in question requires
- that there be power on RTS and DTR line, which the standard serial mouse
- cable does not provide.
-
- This is the standard pinouts for a serial mouse cable:
- (looking at the cable, with male connectors on both ends)
- Macintosh
- 8 minidin
- Pin # Macintosh
- Description RS232
- Name Mouse
- db9
- Pin # Mouse
- db25
- Pin #
-
- 1 Handshake Out RTS 7 4
- 1 Handshake Out DTR 4 20
- 2 Handshake In CTS 8 5
- 3 Transmit Data TD 3 2
- 4 Ground GND 5 7
- 5 Receive Data - RD 2 3
- 8 Receive Data + GND 5 7
-
- Helpful hints:
- When installing the mouse driver, be sure you have a back-up way to move
- the mouse in case you don't get it to work right away. Either keep your old
- ADB mouse connected, or have Easy Access installed in your system. Also,
- terminal programs which are set-up for the same port as the Serial Mouse
- Driver is set up for may crash. When making the serial cable, it's easy to buy
- a Macintosh serial cable, and cut it in half and then solder the db9 connector
- to the cut end. That way you don't have to do any soldering to a 8pin mini-
- din.
-
- Serial Mouse Protocol (for Mouse Systems Mice):
- Events are sent in 5 byte packets at 1200 baud. The first byte is a sync byte, in
- the format 10000LMR, anding any byte with $F8 and then comparing to $80
- will tell you if it's the sync byte. The bits L, M, and R and the status of the
- mouse buttons. 1 = button up, 0 = button down. The second byte in the
- packet is the horizontal change in pixels. The third byte is a vertical change.
- The fourth and fifth bytes are horizontal and vertical change bytes
- respectively.
-
- Serial Mouse Protocol (for Microsoft Mice):
- Events are sent in 3 byte packets at 1200 baud. The first byte is a sync byte, in
- the format 11LRYYXX, anding any byte with $C0 and then comparing to $C0
- will tell you if it's the sync byte. The bits L, and R and the status of the mouse
- buttons. 0 = button up, 1 = button down. YY is the most significant two bits of
- the vertical movement. XX is the most significant two bits of the horizontal
- movement. The second byte in the packet has the format 10XXXXXX. These
- are the lower 6 bits of the horizontal movement. This must be combined
- with the two bits in the sync byte to get the value for the horizontal
- movement. The third byte is of the format 10YYYYYY. This is the lower 6
- bits of the vertical movement. This must be combined with the sync byte like
- the horizontal movement to get the value for the vertical movement.
-
- Changes in version 1.0.1:
- • Bug fixed that caused crash in systems earlier than system 7. (And system
- 7 too, but you really had to do work to get it to do it!)
- • Improved Documentation.
- • Version display added to lower right corner of control panel.
- • Double-click mouse event added to types of events.
- • Color Icons added.
- • Now type of mouse option is updated immediately instead of waiting for
- the user to reboot each time after changing. (Note: you still have to reboot
- each time to change the port that it uses.)
-
- Future ideas for the mouse driver:
- I'm thinking about making a hardware solution to the problem as well, so
- that you can hook the serial mouse up to a converter connected to the ADB
- port. Another idea is to make an ADB converter for IBM AT compatible
- keyboards.
-
- Comment:
- Early 93 I made a IBM AT keyboard to Mac Keyboard converter. It works for
- ADB Macs as well as the Mac Plus.
-
- Other software by me:
- "Chuck's Printer Driver" -- Allows you to connect an Epson compatible 9-pin
- or 24-pin printer up to your Mac.
-
- Disclaimer:
- I take no responsibility for anything you my do to damage or destroy your
- Mac. This software is used at your own risk. Microsoft, Mouse Systems,
- Epson, Macintosh, Think C, and any other trademarks are copyright of their
- respective owners.
-
-