Operating instructions

Marquette Hellige GmbH CardioSys / MicroLab V4.X Page 108
Servicing Instructions 227 436 37 Rev. B V1.3
NOTES:
Although the system architecture of compatible computers permits two cards to share
one interrupt, they cannot both operate at the same time. This frequently causes
problems with programs that use several interrupt controlled devices, e.g. mouse and
modem. Such clashes can be avoided by using the extended (16-Bit) interrupt areas. In
this case the interrupt selected must be supported by the software in use.
Please note that most diagnostic programs currently available do not recognise the
extended interrupt area.
Optionally, the ETC-9081 can be supplied with one or two 16C550 chips. The card is
then equipped with 1 to 2 serial FIFO channels.
In this case, the chip caches 16 Bytes on chip which reduces the CPU's workload. Most
modern software supports this mode.
Because of the extended 16-Bit address decoding, the card enables simple installation of
COM4 even on systems which are equipped with 8514 compatible graphic cards (e.g. S3
chip).
Other I/O cards often cause problems when COM4 is activated which, in the worst
cases, can lead to a system crash.
PROGRAMMING NOTES:
The ETC-9081 can be set to all standard parallel and serial port addresses. Therefore, it
can be used in any compatible system without software drivers. If the extended 8-Bit or
16-Bit interrupt area is used in place of the standard interrupts, or if a non-standard COM
address (COM5-COM8) is used, this must be supported by the software in use. Many
programs - in particular - modern operating systems - allow you to configure the
interrupts and addresses as required.
TECHNICAL SPECIFICATIONS:
Serial ports:
2 x RS-232 Standard with 2 x D-SUB-9 plug
COM 1-4 (03F8h, 02F8h, 03E8h, 02E8h)
COM 5-8 (03E0h, 02F0h, 02E0h, 0260h)
Interrupt selectable: 3,4,5,6,7,9,10,11,12 or 15
16-Bit address decoding (8514 compatible)
Maximum Baud rate: 115 200 Baud
All ports and interrupts can be disabled
Optional 1 to 2 serial FIFOs (550s)
Parallel ports:
2 x Centronics Standard Ports with 2 x D-SUB-25 sockets
LPT1-3 (03BCh, 0378h, 0278h)
Interrupt selectable: 3,4,5,6,7,9,10,11,12 or 15
All ports and interrupts can be disabled
Physical characteristics:
Short 16-Bit card, 157mm x 97mm