Specifications

30 PCL-741 User's Manual
APPENDIX B PC 1/0 Address usage
The following table indicates the PC I/O address usage assignrnent.
To prevent conflicting settings of the PCL-74 1 with other devices or
I/O cards, you are recomrnended to refer this table.
1/0 Address Device
000 - OOF DMA (8237A)
020 - 021 8259A 1 RQ Controller
040 - 043 8253/8254 Timer/Counter
060 - 063 PPI 8255A
070 - 071 Real-Time Clock
080 - 08F DMA Page Register
OAO - OBF 8259A Interrupt Chip
OCO - ODF Second DMA Controller 8237A
OFO - OFF Math Coprocessor
1 FO - 1 F8 AT Fixed Disk
200 - 20F Game 1/0
278 - 27F Serial l/O Port #2
2F8 - 2FF Serial Adaptor ( COM 2 )
320 - 32F XT Fixed Disk
378 - 37F Parallel Printer Adaptor
380 - 38F SDLC Binary Communication Adaptor
3AO - 3AF Master Binary Communication Adaptor
3BO - 3BF Monochrome/Parallel Adaptor
3DO - 3DF Color Graphics Adaptor
3FO - 3F7 Diskette Controller
3F8 - 3FF Serial Adaptor ( COM 1 )