Hardware manual

1 Specification EUROCOM-17-5xx
2 Hardware Manual
• IOC-2 gate array:
- 68040 to 68020 bus converter
- Dynamic bus sizing for VMEbus and LEB
- Translation of BLT into bursts on '040 bus to allow snooping of BLT
cycles
- Separate arbitration on '040 and '020 bus
- I/O bus interface
- Support for VMEbus UATs to allow snooping
- Interface for a single bytewide EPROM
• Parallel I/O or Centronics port
• Six 16-bit timer/counter
• Four serial ports (RS232, RS422, RS485)
• Smart SCSI-2 (NCR 53C720) interface with burst capability (max.
transfer capacity 20MB/s) and single-ended 8/16-bit SCSI data bus
• Two rotary switches on front panel for selection of operation modes and
base address
• Status display on front panel
• IBM keyboard interface
• Watchdog timer with watchdog indicator on front panel
• LEB