HIEE451116R0001机器人卡件,ABB使用在哪里
ISA超级输入/输出设备（ISASIO）MVME2603/2604使用National的PC87308 ISASIO芯片半导体来实现P2和前面板的某些部分输入/输出：
❏ 两个异步串行端口（COM1和COM2）通过P2和过渡模块
❏ 通过P2和转换模块的并行端口：–MVME712M兼容机型中的Centronics打印机端口–兼容MVME761的IEEE1284双向并行端口模型
❏ 通过驱动器/电源连接器J4支持软盘驱动器
HIEE451116R0001机器人卡件❏ 通过圆形DIN连接器J6和J8异步串行端口ISASIO设备提供的两个异步端口采用通过EIA-232-D驱动器缓冲的TTL电平信号和接收器并路由到P2连接器。
硬件使用ISA将两个串行端口初始化为COM1和COM2输入/输出基址分别为3F8美元和2F8美元。此默认值配置还将COM1分配给PIB（PCI/ISA网桥控制器）中断请求行IRQ4和COM2至IRQ3。您可以更改通过重新编程ISASIO设备进行默认配置。有关详细信息编程信息，请参阅MVME2603/2604程序员参考指南，见附录D，相关文件，以及ISASIO的供应商文件装置并行端口
并行端口是MVME712M兼容机型中的Centronics打印机接口，以及中的完整IEEE1284双向并行端口MVME761兼容型号。这两个版本都使用ISASIO设备。所有并行输入/输出接口信号通过
串联阻尼电阻器。硬件使用ISA IO基址将并行端口初始化为PPT130亿美元。此默认配置还将并行端口分配给PIB（PCI/ISA网桥控制器）中断请求线IRQ7。你可以改变通过重新编程ISASIO设备的默认配置。对于详细编程信息，请参阅PCI和ISA总线MVME2603/2604程序员参考指南中的讨论，附录D相关文件中列出，并发送给供应商ISASIO设备的文档。
ISA Super I/O Device (ISASIO)
The MVME2603/2604 uses a PC87308 ISASIO chip from National
Semiconductor to implement certain segments of the P2 and front-panel
I/O:
❏ Two asynchronous serial ports (COM1 and COM2) via P2 and
transition module
❏ Parallel port via P2 and transition module:
– Centronics printer port in MVME712M-compatible models
– IEEE1284 bidirectional parallel port in MVME761-compatible
models
❏ Floppy disk drive support via drive/power connector J4
❏ Keyboard and mouse interface via circular DIN connectors J6 and
J8Asynchronous Serial Ports
The two asynchronous ports provided by the ISASIO device employ
TTL-level signals that are buffered through EIA-232-D drivers and
receivers and routed to the P2 connector.
Hardware initializes the two serial ports as COM1 and COM2 with ISA
I/O base addresses of $3F8 and $2F8 respectively. This default
configuration also assigns COM1 to PIB (PCI/ISA Bridge Controller)
interrupt request line IRQ4 and COM2 to IRQ3. You can change the
default configuration by reprogramming the ISASIO device. For detailed
programming information, refer to the PCI and ISA bus discussions in the
MVME2603/2604 Programmer’s Reference Guide, listed in Appendix D,
Related Documentation, and to the vendor documentation for the ISASIO
device.
Parallel Port
The parallel port is a Centronics printer interface in MVME712Mcompatible models, and a full IEEE1284 bidirectional parallel port in
MVME761-compatible models. Both versions are implemented with the
ISASIO device. All parallel I/O interface signals are routed to P2 through
series damping resistors.
Hardware initializes the parallel port as PPT1 with an ISA IO base address
of $3BC. This default configuration also assigns the parallel port to PIB
(PCI/ISA Bridge Controller) interrupt request line IRQ7. You can change
the default configuration by reprogramming the ISASIO device. For
detailed programming information, refer to the PCI and ISA bus
discussions in the MVME2603/2604 Programmer’s Reference Guide,
listed in Appendix D, Related Documentation, and to the vendor
documentation for the ISASIO device.
