|
Installing Windows 95:
|
Remember to use Easy-Setup to configure the serial devices to your liking - I normally go for the internal modem as device 1 and the serial port as device 2. This means I disable the infrared port and any PCMCIA modems that may be installed.
The PC110 internal modem is not picked up by Windows 95 when it scans for hardware. With the hardware setup described above, I get COM2: recognised correctly, but no COM1: whatsoever. You therefore have to help it along by giving Windows a subtle clue - install a serial port using the resources allocated to the internal modem (COM1: in my case) - then repeat the search for modems.
Do this by going into Control Panel, clicking on Add New Hardware, avoiding the search, and selecting a standard Communications Port from the list presented. You will be presented with a panel that tells you the selected resources, which you can subsequently change in Device Manager if you're not happy with them. The table below shows the standard resources associated with COM1: and COM2: on an AT-bus system:
| Port | I/O | IRQ |
| COM1: | 3F8h | 4 |
| COM2: | 2F8h | 3 |
These are the values used by Easy-Setup when you set a serial device to be 1 (COM1:) or 2
(COM2:). You cannot enable a device as COM3: or COM4:.
Windows detected my modem as a Standard Modem, and set the maximum speed to a rather optimistic 57600 baud. I normally knock this down to 9600, which is the maximum speed of the fax side of the modem. (This overestimate is due to the fact that the serial port, infrared port, and internal modem are all driven by the same 16550 UART chip, which is capable of a maximum throughput of 115,200 bps. It is the modem itself which then limits the connection speed...)
Remember you'll probably have to add an X3 to the initialisation string to get the
modem to dial out, and an M0 might come in handy if you find the modem handshake deafening
like I do. Have a look at my general modem usage notes for more
discussion of these two points.