
Note: Most 40 column software does not automatically
deactivate an 80 column card. If you try to run a 40 column
program while the Viewmaster 80 is in 80 column mode, nothing
will appear on the screen. Use the "Control-Z 1" command to
deactivate the 80 column mode or boot your program disk using
the computer's power switch.
CP/M
®
Software
Booting the CP/M operating system automatically initializes the
Viewmaster 80. The Viewmaster 80 is compatible with both the
Applied Engineering
®
Z-80 Plus™ card and the Microsoft
®
Softcard™. Other Z-80 processor cards which use a non-standard
version of the CP/M operating system may not be completely
compatible with Viewmaster 80.
Pascal Software
The Viewmaster 80 is fully compatible with Pascal and is
automatically initialized whenever the Pascal operating system is
booted.
The Escape codes used to generate the alternate characters not
available on the Apple ][ Plus keyboard (described in Chapter 3 )
may interfere with Pascal. To overcome this, Applied Engineering
has developed an enhanced console driver utility to enable the
alternate characters to be entered from the Apple ][ Plus keyboard
without conflicting with Pascal in any way. The Pascal Enhanced
Console Driver utility disk is available from Applied Engineering
Sales. The instructions are contained in a Pascal text file on the disk.
Hardware Compatibility
The Viewmaster 80 was designed to provide Apple ][ and Apple
][ Plus computers with 80 column display capability.
Most video monitors are compatible with Viewmaster 80’s video
output. A very small percentage of monitors may exhibit an
annoying flickering when the 80 column display is active. The Apple
Monitor ///, originally designed for the Apple /// computer, is one
of these monitors. The screen flickering can be eliminated by the
substitution of one of the ROM (Read Only Memory) chips on the
Viewmaster 80 card. Please refer to Appendix A for details.
Ch. 2 - Using the ViewMaster 80
5
Содержание Viewmaster 80
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