Apple IIgs Manuel d'utilisateur télécharger pdf (Page 48)

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slots for a disk drive controller card, an interface card that controls one or two disk drives.

It looks first at slot 7, the highest-numbered slot. If it doesn't find a disk drive controller

card there, it looks in slot 6, the next-highest-numbered slot, then slot 5, and so on, until

it finds a disk drive controller card. When it finds a disk drive controller card, it checks

the disk drive connected to that card for a startup disk. This method of looking for a startup

device is called scanning.

Generally this system works fine, but what if you want to bypass the disk drive connected to

slot 6 and start up from the disk drive connected to slot 5? What you do is change the startup

slot from Scan, the standard setting, to slot 5 or any other slot containing the drive you want

to start up from.

But what if your disk drives are connected to ports? From the com-puter's point of view, ports

look just like slots with cards in them. A 5.25-inch drive connected to the disk drive port

emulates a disk drive connected to a card in slot 6. A 3.5-inch drive connected to the disk

drive port emulates a disk drive connected to a card in slot 5. Just choose the slot that

corresponds to the drive you want to start up from.

You'll also be offered the option of starting up from a RAM disk or a ROM disk. Starting up

from a RAM disk means starting up from an application that you've copied into the memory on

your Apple IIgs memory expansion card.

You should not select the RAM disk as your startup device unless you have a memory expansion

card in the memory expansion slot and you've copied an application to the RAM disk. See the

Apple IIgs Memory Expansion Card Owner's Guide for more information.

Starting up from a ROM disk means starting up from an application permanently stored on a

memory expansion card. (Depending on what kind of memory expansion card you get, you may or may

not have applications permanently stored on a ROM disk.) The manual that came with your memory

expansion card will tell you more about starting up from a RAM disk and a ROM disk.

Changing Printer/Modem Port Settings

The printer and modem ports work a little differently than the other ports on the back panel.

Whereas most of the ports are configured to interact with a particular type of device (a disk

drive, a monitor, a joystick) in a particular way, the printer and modem ports are designed so

you can change their configuration. They are general-purpose serial ports.

Different printers and different remote computers expect to receive information at different

speeds and in different configurations. That's why it's important that you be able to change

the way infor-mation is sent.

The printer port is configured to work automatically with the ImageWriter series of printers

and with many other popular serial printers. The modem port is configured to work automatically

with most commercial information services you'll be accessing with your modem. However, if your

device requires a different configuration or if you want to use a modem in the printer port and

a printer in the modem port, you'll need to change the data configuration. There are two ways

to do this: from within an application or by using the Control Panel Program. The configuration

you specify in an appli-cation overrides the Control Panel setting for a port.

How do you know whether your application is overriding the Control Panel settings for the port?

If the application gives you a list of printers and asks you to choose yours from the list,

it's going to send the document in the correct configuration for the printer you choose and

will ignore the Control Panel settings for the port.

A tip: Even if your printer is not on the list, try selecting each of the printers on the

list. If your printer happens to have the same configuration as one of those on the list,

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Apple IIgs Manuel d'utilisateur Page 48

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