Title: Intellicon-8 Multiport Serial I/O Rev E and F Changes
Keywords: Intellicon Rev E changes
Date: March 19, 1996
The newer revisions of Intellicon8 have undergone three major changes.
1) The drop down portion of the Intellicon card behind the ISA bus connector has been removed. The new PCB (Printed Circuit Board) shape is now more consistent with other ISA PCB’s. This should allow the Intellicon8 to be compatible with a wider range of PC Mother Boards.
2) The PCB Layout has been optimized to include a ground plane. This should provide greater reliability and stability in noisy environments.
3) We have added two diagnostic LED’s (Light Emitting Diodes) at the top of the board. These LED’s have a set of jumpers (J3-J7) associated with them, it is not recommended that customers attempt to change the jumper settings of (J3-J7) from the default settings. The LED’s and jumpers are not part of the normal operation of the card, and are not required to be set in particular way for the board to function. For those who are still interested in the function of the LEDS and jumpers, please see below.
L1 Red This LED shows the state of the Z80 halt signal.
LED off = Z80 not halted.
LED on = Z80 halted, due to some fatal error.
L2 Yellow This LED shows the state of five jumper selectable signal selected with jumpers J3 ->J7. The description is as follows.
J3 = NMI, this is the interrupt from PC -> Z80.
J4 = ZRESET, this is the reset to the Z80 processor.
J5 = PCIRQ, this is the interrupt from the Z80 to the PC.
J6 = ENABLE, means the Dual Ported RAM (DPR) is enabled.
J7 = INTENB, Interrupts are enabled.
Note: There should never be more than one jumper installed on the above group at the same time.
None of these changes should effect the overall performance or reliability of the board. The changes are meant as enhancements and improvements. This revision is 100% compatible with older versions of software, cabling and computers.
For more details please contact the Technical Support Department: firstname.lastname@example.org
End of KDB-128