Apple Logic Board Información técnica descargar pdf (Pagina 19)

Apple II Plus).

PRECAUTIONS CONCERNING BOOTING DISKS:

This precaution applies to systems which have been config-

ured (using the configuration program) to use an Integer or

Applesoft firmware card with the relocated DOS. In this situa-

tion, it is recommended that booting (via PR#6, etc.) be accomp-

lished from the main board ROM BASIC (i.e. Applesoft in an Apple

II plus; Integer [or monitor] in an Apple II), and not from the

BASIC present in the Apple Firmware card. This is to insure that

the firmware card is not left on after the boot.

The relocated DOS has been designed to operate properly with

an Applesoft or Integer card during the boot process, and can

therefore be booted from either Integer or Applesoft. However,

the standard DOS 3.3 or 3.2 (such as that present on the system

master) does not have a provision for use of an Integer or

Applesoft card from a slot other than 0, with the relocated DOS.

If the precaution is not taken to return to the main board ROM

BASIC prior to the boot in this case, the firmware card will be

left on after the boot with no way for DOS to turn it off, and the

system will hang.

In summary:

When operating under the relocated DOS with an Integer or

Applesoft card in a slot other than 0,

1. Boot a relocated DOS as usual, either from Applesoft or

integer

2. Boot a standard DOS only from the main board ROM BASIC,

a) Integer (or monitor] on an Apple II.

b) Applesoft on an Apple II plus.

IV. COMPATIBILITY OF RELOCATED DOS WITH EXISTING SOFTWARE

In many respects the relocated DOS can be treated just as a

normal DOS 3.2 or 3.3. In some instances however, problems arise

where a particular application program attempts to make internal

modifications to DOS. Such programs may not operate properly

since DOS is no longer located where it is expected by the

program (i.e. at the top of the 48K of RAM). In these instances

a modification of the particular program involved may be required

to permit operation with the relocated DOS.

A. MODIFICATION OF FID AND MUFFIN

Two programs provided on the DOS 3.3 system master, FID and

MUFFIN contain a minor bug which arises when an attempt is made

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Apple Logic Board Información técnica Pagina 19