Cloud-9 miniFLASH, Руководство пользователя

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The following table shows the function of each of the five pairs of jumpers:
Jumper Pair Function if ON Function if OFF
1-2 FBSR resets on
power cycle
FBSR resets on
RESET
3-4 Not used Not used
5-6 Bit 4 of base address
is SET Bit 4 of base
address is CLEAR
7-8 Bit 5 of base address
is SET Bit 5 of base
address is CLEAR
9-10 Bit 6 of base address
is SET Bit 6 of base
address is CLEAR
You will learn shortly how to set these jumpers for your specific system setup.
Configuring the Interface
In order to insure that your miniFLASH matches your Color Computer system, it is important to set
the state of the jumpers to reflect the proper base address as well as FBSR reset behavior.
Setting the Base Address
As shipped, the interface’s base address is set up at a default of $FF59. We recommend keeping
this setting if possible. In order to this, you must verify that no other devices in your system conflict
with this address allocation.
If you do have a conflict then a base address must be selected where there are no conflicts. The
interface allows a base address selection of $FF49, $FF59, $FF69 and $FF79. Jumper pairs 5-6, 7-8
and 9-10 allow you to select one of these four base addresses.
The following table shows how to set the jumper shunts based on the desired base address. Please
note that when a jumper shunt is OFF, the corresponding bit is SET:
Address J5-J6 (Bit 4) J7-J8 (Bit 5) J9-J10 (Bit 6)
$FF49 Shunt OFF Shunt ON Shunt ON
$FF59 Shunt OFF Shunt ON Shunt OFF
$FF69 Shunt OFF Shunt OFF Shunt ON
$FF79 Shunt OFF Shunt OFF Shunt OFF