Caple C871i Manual de usuario descargar pdf (Pagina 278)

Apple II Computer Info

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### Created : Sunday, January 14, 1996 Modified: Sunday, January 14, 1996

### File Type: "TEXT" File Creator: "LMAN"

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From: [email protected] (RUBYWAND)

Newsgroups: comp.sys.apple2

Subject: Re: Help I.D.ing cards.

Date: 19 Nov 1995 15:01:31 -0500

Organization: America Online, Inc. (1-800-827-6364)

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james keim ([email protected]) wrote:

> One is an accelerator card--an "M-c-T SpeedDemon"

> It is dated 1984. Does anyone know what speed this thing

> runs? I _think_ I am seeing four 16k 90milisecond cache ram

> chips on it. There also seems to be a little place for

> jumper block on the top of the card, near the keyboard end.

> Any ideas what it might be for? Any ideas if there is a way

> to control this thing through software/hardware? Oh, I did

> notice that the card draws a little Apple on the graphics

> screen before the Autostart ROM kicks in and the "Apple ]["

> appears.

The RAMs on our Speedemon are 100ns 2048x8 9128's (for a total 8K of

pretty speedy cache). I once asked McT about the jumper block you

mention, they said the jumper is set at the factory to adjust on-card

timing and to Leave It Alone. (On our card, the jumper block has 5 pairs.

The pair 2nd from the top is jumpered.)

There is also a jumper pair near the bottom middle of the card. This

is the Speed Jumper. Jumper it if you want 'demon to slow down for I/O

accesses to Slots 4 & 5. (The 'demon always slows for Slot 6 I/O ($C0E0 -

$C0EF.)

According to the "Manual" (a folded card), pressing PDL-1

(Closed-Apple on a IIe) upon power-up will engage a self-test. Pressing

ESC at power-up will turn OFF the card and allow running at normal speed.

To turn OFF the card later on, do a POKE (49152+256*S) where S= Slot # of

the slot the card is in; then, press RESET.

You can put the 'demon into any Slot; but, if you put it in Slot 0

(Slot 3 in a IIe), the card will not respond to any KB shut-off commands.

Apple II Computer Technical Information : Apple II Family Hardware Info

ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 278 of 572

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Caple C871i Manual de usuario Pagina 278

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Caple C871i Manual de usuario Pagina 278

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