3BDH000013R1主控板，ABB产品颜色
每个接口支持CT、DCD、RTS和DTR控制信号，如以及TxD和RxD发送/接收数据信号，以及TxC/RxC同步时钟信号。因为并非所有调制解调器控制线都可用在Z85230中，Z8536 CIO用于提供缺失的调制解调器线路。PAL设备执行寄存器访问和伪中断的解码在ISA输入/输出空间中确认Z85230和Z8536的周期。这个PIB控制器为Z85230提供DMA支持。Z85230接收10 MHz时钟输入。Z85230提供伪中断确认周期期间的中断向量。
3BDH000013R1主控板向量是根据中断源在Z85230内修改。打断请求级别通过PIB控制器编程。参见Z85230数据表和MVME2600/2700系列单板计算机程序员参考指南，了解更多信息。Z8536 CIO设备Z8536 CIO设备通过提供Z85230 ESCC未提供调制解调器控制线路。此外Z8536 CIO设备有三个独立的16位计数器/计时器。这个Z85230接收5 MHz时钟输入。基本模块特征寄存器基本模块功能寄存器包含MVME2700的详细信息单板计算机的配置。它是一个8位只读寄存器位于ISA输入/输出地址$0802的基板上。SCCP∗ Z85230 ESCC存在。如果设置，则无车载同步串行支持（不存在ESCC）。如果已清除，安装了Z85230 ESCC，并且有车载支持同步串行通信。PMC2P∗ PMC/PMCIX插槽2存在。如果设置，则没有PCI夹层卡（或PCI扩展设备）安装在PMC插槽2中。如果清除，PMC/PMCIX插槽2包含PCI夹层卡（或PCI扩展设备）。PMC1P∗ PMC插槽1存在。如果设置，则未安装PCI夹层卡在PMC插槽1中。如果清除，PMC插槽1包含PCI夹层卡。VMEP∗ VMEbus存在。如果设置，则没有VMEbus接口。如果清除后，支持VMEbus接口。LANP∗ 存在以太网。如果设置，则不需要以太网收发器接口安装。如果清除，则有车载以太网支持。SCSIP∗ SCSI存在。如果设置，则没有板载SCSI接口。如果已清除，支持板载SCSI。
Each interface supports the CTS, DCD, RTS, and DTR control signals as
well as the TxD and RxD transmit/receive data signals, and TxC/RxC
synchronous clock signals. Since not all modem control lines are available
in the Z85230, a Z8536 CIO is used to provide the missing modem lines.
A PAL device performs decoding of register accesses and pseudo interrupt
acknowledge cycles for the Z85230 and the Z8536 in ISA I/O space. The
PIB controller supplies DMA support for the Z85230.The Z85230 receives a 10 MHz clock input. The Z85230 supplies an
interrupt vector during pseudo interrupt acknowledge cycles. The vector is
modified within the Z85230 according to the interrupt source. Interrupt
request levels are programmed via the PIB controller. Refer to the Z85230
data sheet and to the MVME2600/2700 Series Single Board Computer
Programmer’s Reference Guide for further information.
Z8536 CIO Device
The Z8536 CIO device complements the Z85230 ESCC by supplying
modem control lines not provided by the Z85230 ESCC. In addition, the
Z8536 CIO device has three independent 16-bit counters/ timers. The
Z85230 receives a 5 MHz clock input.
Base Module Feature Register
The Base Module Feature Register contains the details of the MVME2700
single board computer’s configuration. It is an 8-bit read-only register
located on the base board at ISA I/O address $0802.SCCP∗ Z85230 ESCC present. If set, there is no on-board
synchronous serial support (the ESCC is not present). If
cleared, the Z85230 ESCC is installed and there is on-board
support for synchronous serial communication.
PMC2P∗ PMC/PMCIX slot 2 present. If set, no PCI mezzanine card (or
PCI expansion device) is installed in PMC slot 2. If cleared,
PMC/PMCIX slot 2 contains a PCI mezzanine card (or PCI
expansion device).
PMC1P∗ PMC slot 1 present. If set, no PCI mezzanine card is installed
in PMC slot 1. If cleared, PMC slot 1 contains a PCI
mezzanine card.VMEP∗ VMEbus present. If set, there is no VMEbus interface. If
cleared, the VMEbus interface is supported.
LANP∗ Ethernet present. If set, no Ethernet transceiver interface is
installed. If cleared, there is on-board Ethernet support.
SCSIP∗ SCSI present. If set, there is no on-board SCSI interface. If
cleared, on-board SCSI is supported.
