TransWarp
Getting Started | Before the TransWarp card is installed in the computer, some of the switches on | ||
the TransWarp card may need to be changed to accommodate the timing needs | |||
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| of the other cards installed in your system. |
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| TransWarp will work with all standard peripheral cards, such as expanded memory | ||
| cards, printer and modem interfaces, clock cards, 80 column cards, mouse cards, | ||
| and disk drive controllers. Some of these cards, though, may not operate as | ||
| expected at the higher TransWarp speeds. By setting the switches on the | ||
| TransWarp card, you can tell the TransWarp’s circuitry which cards, in which slots, | ||
| require the 1 MHz clock rate. This will allow TransWarp to slow down to the | ||
| Apple’s clock speed momentarily when those cards are accessed by the | ||
| software. This has a very small effect on the overall TransWarp speed, since | ||
| these interfaces are accessed for very short periods of the computer’s time. | ||
| TransWarp must be specially configured to be compatible with memory expansion | ||
| cards which install in the Apple’s expansion slots (zero through seven) and use | ||
| the $D000 to $FFFF “language card bank switching technique” to expand the | ||
| Apple’s memory. For details on the operation of your memory card, refer to its | ||
| instruction manual. Newer expansion slot memory expansion cards do not use | ||
| this technique. The procedure for configuring the TransWarp card for expansion | ||
| slot memory card compatibility is explained in the next section. | ||
| Due to the number and variety of expansion and interface cards available, it is | ||
| impassible to list which cards require the 1 MHz clock rate. Without a great deal of | ||
| technical information, it is also impossible to determine which cards will or won’t | ||
| work at TransWarp speed. Generally, most floppy disk controllers, serial | ||
| printer and communications interfaces, and clock cards do require the | ||
| 1 MHz timing signal. Parallel printer interfaces, | hard disk controllers, | |
| 80 column cards, and mouse cards usually will | operate correctly at full | |
| TransWarp speed. |
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The simplest method of determining the timing signal requirement of a card is to try it at TransWarp speed. If it doesn’t work properly, set the appropriate TransWarp switch to slow down for that expansion card slot. The instructions for setting these switches are in the next section.
Note: TransWarp was designed to be very power efficient, but like all accelerator cards, it draws a fair amount of power and generates heat. Applied Engineering recommends the use of a cooling fan, such as the Kensington Microware System Saver®, especially when the TransWarp is installed in a lie with the newer style case. These specially designed fans are available from many computer dealers.
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