MVME188A | MVME165-01 | 內(nèi)存模塊 |MVME166
型號(hào)：MVME188A
類別：內(nèi)存模塊
這臺(tái)摩托羅拉 MVME188A VME 單板計(jì)算機(jī)已使用且狀況良好。
配置：
? 帶 2 個(gè)串行端口的
SYSCON 模塊 ? 2 個(gè) 32 MB 內(nèi)存模塊
? 安裝了 10 個(gè)摩托羅拉 XC88200RB25 25 MHz 處理器的 CPU 模塊
特征：
VMEmodule 板組上的多個(gè) RISC MPU/DRAM 選項(xiàng)
(1) 至 (4) MC88100 25 MHz 的 RISC 微處理器
32KB - 512KB 高速緩存，位于 (2)、(4) 或 (8) MC88200或MC88204高速緩存/內(nèi)存管理單元 (CMMU) 中
2KB 非易失性配置存儲(chǔ)
艾默生/摩托羅拉 MVME188A 系列 VME 單板計(jì)算機(jī)有多種型號(hào)。基本MVME188A僅包括系統(tǒng)控制器 (SYSCON) 板和 25 MHz 主邏輯 (CPU) 板。如果不添加一個(gè)、兩個(gè)、三個(gè)或四個(gè)內(nèi)存板，它將無法工作;以及一個(gè)包含RISC芯片的HYPERmodule夾層模塊。
MVME188A的增強(qiáng)功能(在MVME188上)包括單周期刷新以最大限度地降低 VCC 噪聲、增加板載旁路電容以及高速時(shí)鐘線的板載屏蔽。此外，MVME188A還增強(qiáng)了正交數(shù)據(jù)/地址線布局，以減少串?dāng)_，并從CMOS更改為TTL驅(qū)動(dòng)器，以減少過沖/下沖。
MVME188A提供改進(jìn)的RESET功能。它在非系統(tǒng)控制器且內(nèi)存映射在 $0 以外的位置的MVME188A板上執(zhí)行完整的系統(tǒng)復(fù)位。也不允許監(jiān)督模式和用戶模式訪問。
MVME188A | MVME165-01 | Memory module |MVME166
Model: MVME188A
Category: Memory module
This MOTOROLA MVME188A VME single-board computer is used and in good condition.
Settings:
? With 2 serial ports
SYSCON modules ? 2 32 MB memory modules
10 CPU modules with MOTOROLA XC88200RB25 25 MHz processor are installed
Features:
Multiple RISC MPU/DRAM options on the VMEmodule board group
(1) to (4) MC88100 25 MHz RISC microprocessor
32KB-512KB cache, located in (2), (4), or (8) MC88200 or MC88204 Cache/memory management unit (CMMU)
2KB of non-volatile configuration storage
The Emerson/MOTOROLA MVME188A series of VME single-board computers are available in a variety of models. The basic MVME188A consists only of a system controller (SYSCON) board and a 25 MHz main logic (CPU) board. It won't work without adding one, two, three, or four memory boards; And a HYPERmodule mezzanine containing a RISC chip.
Enhancements to the MVME188A (on the MVME188) include a single-cycle refresh to minimize VCC noise, increased on-board bypass capacitance, and on-board shielding for high-speed clock lines. In addition, the MVME188A has enhanced the orthogonal data/address line layout to reduce cross talk and changed from CMOS to TTL drivers to reduce overshoot/downshoot.
The MVME188A offers an improved RESET function. It performs a full system reset on an MVME188A board that is not a system controller and whose memory map is outside of $0. Supervisory mode and user mode access are also not allowed.
