Apple Logic Board Información técnica descargar pdf (Pagina 38)

The program will demonstrate the operation of the following

functions.

1. Store array (#5)

2. Fetch array (#6)

3. Store subroutine or program segment (#3)

4. Fetch subroutine or program segment (#4)

In addition, several support functions are used.

1. Initialize RAMEXPAND (#14)

2. Connect Blocks (#9)

A. To execute the demonstration program,

1. Relocate DOS (BRUN MOVEDOS or boot a relocated DOS)

2. Run the loading program, RAMEXPA.LOAD.

3. Run DEMO

(note: This program will not use the space in the

Saturn RAM board where the alternate BASIC is normally

loaded. As a result, one can run the program from

Applesoft in the Saturn RAM board on an Apple II.)

B. PROGRAM OPERATION

1. The demonstration program will first initialize

RAMEXPAND (function #14) and attach the 4K bank with

block designation #32 to the system using the connect

function (#9). In this way, the space normally occupied

by the alternate BASIC is reserved, in the event that

it is required.

2. The program will then set up some custom driver

routines (used for PROGRAM LISTING menu option) by

BRUNing DEMOUTPUT.

3. Three program segments will then be loaded from disk

(APPEND1, APPEND2 and APPEND3) and saved by RAMEXPAND

in extended RAM using the Store subroutine or program

segment funtion (#3)

4. The main portion of the demonstration program (DEMO2)

will be loaded and a menu displayed. The following

options are available.

a) LIST — This option will serve to list the program

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Apple Logic Board Información técnica Pagina 38