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From: pbauer@athena.mit.edu (Paul H Bauer)
Newsgroups: comp.sys.apple2
Subject: Re: accelerator's slot?
Date: 8 Oct 1995 00:24:39 GMT
Organization: Massachusetts Institute of Technology
Lines: 149
Message-ID: <4575o7$a1l@senator-bedfellow.MIT.EDU>
References: <44ucs3$haa@mordred.cc.jyu.fi>
NNTP-Posting-Host: arcadia.mit.edu
TITAN ACCELERATOR IIe
Section 1
STEP 1. DON'T TAKE THE ACCELERATOR IIE OUT OF THE PINK ANTI-STATIC BAG
YET.
STEP 2. Turn off the power to your Apple.
STEP 3. Put a piece of aluminum foil on the table next to your Apple.
STEP 4. Take the cover off the Apple.
STEP 5. Make a list of the contents of each slot in a table like the one
below:
Slot 0 ____________________ Slot 4 ______________________
(or aux slot)
Slot 1 ____________________ Slot 5 ______________________
Slot 2 ____________________ Slot 6 ______________________
Slot 3 ____________________ Slot 7 ______________________
STEP 6. If you have an Apple II or II Plus,we reccomend that you put your
Accelerator IIe in slot 0. If you have a memory board in slot 0
now move it to another slot or just take it out. The Accelerator
IIe contains its own built-in language card with 16k of memory, so
you don't really need another 16k memory board.
STEP 7. On your slot table, mark the slot number(s) that contain DISK
CONTROLLER CARD(S), MODEM INTERFACE, VIDEO DIGITIZER CARD, or
other interfaces to time-sensitive devices. A time-sensitive
device is one whose controlling software makes iterative timing
calculations. This does not include memory boards, 80 column
cards, or printer interfaces.
STEP 8. Touch the Apple's power supply to discharge any static electricity
on your fingers. Then remove the Accelerator IIe from its pink bag
and put the board on the aluminum foil. Make sure each pin is
touching the aluminum foil to prevent static buildup.
STEP 9. Find the block of small switches on your Accelerator IIe board.
Switches 1 to 7 correspond to slots 1 to 7. For each slot with a
time sensitive device (refer to your slot table), set the
corresponding switch OFF. Set switch 8 OFF. Set all the other
switches ON.
STEP 10. Find the block of jumpers on the upper right of the Accelerator
IIe. Refer to figure 2. There are 7 jumper positions. The top
jumper goes with slot 1, the next with slot 2, etc. The bottom
jumper goes with slot 7. Now for each slot where you have any type
of memory board, remove the corresponding jumper(small plastic
gadget). If you have an Apple IIe, ignore the auxiliary slot. For
an AppleII or II plus, the Accelerator IIe will not recognize a
memory board in slot 0. Thus there is no jumper for slot 0. We
recommend that you put the Accelerator IIe in slot 0 of an Apple
II or II Plus.
STEP 11. Make sure the power is turned off for your Apple.Touch the power
supply again. Now plug the Accelerator IIe into the slot 0 on your
Apple II or II Plus, or into any available slot on your Apple IIe.
Slot 3 is a good choice for the Apple IIe, since the Accelerator
IIe wil work in slot 3 whereas most other cards won't.
STEP 12. Replace the cover to the Apple.
STEP 13. If you do NOT have a Z-80 card, skip this step. If you have a
Microsoft Z-80 Softcard or another Z-80 card which uses DMA, you
must use the preboot disk which came with your Accelerator IIe
before you run any Z-80 (CP/M) software. You do not need the
pre-boot if you have a Z-80 card which does not use DMA. Consult
your Z-80 card manual if in doubt.
To use the pre-boot, just boot the Accelerator IIe pre-boot
disk. It is already set for the "desireable" option, which is what
you need. Now remove the pre-boot disk, insert your regular CP/M
disk, and press the space bar. Run your programs as usual. Your
CP/M software will not speed up, since it is not using the
Accelerator's 6502. To get back to 6502 operation for DOS or
Pascal, you must reboot the system. Just turn off the power and
back on to get the accelerated 6502 operation.
STEP 14. All your software (except CP/M programs requiring a Z-80 card)
will now run approximately 3-1/2 times faster! If you want to slow
down (in order to play games, perhaps), you can use the pre-boot
disk provided with your Accelerator IIe board. Just boot this disk
before you run your game. Move the cursor to the "slow down"
position with the right arrow key. Now remove the pre-boot disk,
insert a regular DOS or Pascal disk, and press the space bar. Run
your program as usual.
Step 15. For more information, read Section II at your convenience
LIMITATIONS:
1. The Accelerator IIe will not speed upCP/M software running on a
Z-80 card. All other applications will run approx. 3-1/2 times
faster.
2. The Accellerator IIe is not compatable with the Corvus Omninet or
other DMA (direct memory access) devices.
3. The Accellerator IIe will not access the second bank of a Saturn
32k RAM Board, although the built in language card on the
Accellerator IIe effectively replaces this second bank.
4. A few programs are not compatible with the CMOS 6502 because they
treat newly implemented op-codes as no-ops.
SECTION 2 - Accellerator IIe INFORMATION
PROCESSOR
The Accellerator IIe is based on a CMOS 6502 microprocessor
running at 3-1/2 MHZ. This replaces the Apple's 1 MHz 6502
processor for all computation. The Accellerator's clock is derived
from the 7M signal on the expansion bus. The frequency is divided
by 2 for normal operation of the Accelerator. Synchronization of
off-board cycles is accomplished by cycle stretching.
CMOS parts are particularly sensitive to static
electricity, and for this reason the Accellerator IIe should be
handled with some care. Ground yourself by touching the Apple's
power supply before removing the Accellerator IIe from its
anti-static bag. Place the board on a piece of aluminum foil or
other conductor to set the switches and jumpers. Be sure every pin
on the back of the board is touching the conductor during the
operation. Once the board is plugged in, never touch it without
first touching the power supply. Avoid excess handling of the
Accellerator IIe. The board should always be kept either in its
anti-static bag or in one of the Apple's slots.
MEMORY
CONTROL PORT
The Accelerator IIe operating mode may be controlled by
execution of a machine language write cycle or BASIC poke according to
table 1:
Table 1
_________________________________________________________________________
Data to
Address write Function
_________________________________________________________________________
C086 05H High speed (normal operating
mode, set on power-up)
C086 01H Low speed
C086 0AH Disable
I think this should give enough information to write a simple basic
program to set the speed of the card or disable it.
Paul pbauer@mit.eduTo: