这个特定的单元已有29年历史，足以容纳EPROM数据保留问题。
许多集成电路上的日期代码显示1984年末的工作周，因此我认为它是在1985年制作的。所述的S / N从23开始，指向1983年，即模型引入的那一年。
CRT没有任何烧伤证据，既明亮又清晰。
这表明该单位29年来只有轻微使用。
我的实验室里有3570个，在39年后仍在运行！
当它构建正确时它不会因为支持消失而过期;-)。
当启动设备启动时，它的ROM测试报告两个块错误，它的RAM测试（通过）然后停止ROM测试灯仍然打开和蜂鸣器现在响亮。
我已经检查了卡上裸露的顶部的所有MC68000引脚，它们看起来都是强大的逻辑电平。
我也接触到ROM模块上的芯片选择线，它们看起来也像TTL一样合理。
我还没有尝试过更乏味的探测EPROM上所有缓冲地址和数据线的工作。
以同样的方式，我还没有使用在网络上找到版本C代码的转储来更新所有新的EPROM。
所有八个都焊接在:-(。我想有两个同时出去很可能不是真正的EPROM。谢谢，杰拉尔德
以上来自于谷歌翻译
以下为原文
This particular unit is 29 years old, old enough to have EPROM data retention issues. The date codes on many of the ICs show work weeks late in 1984, therefore I believe it to have been made in 1985. The S/N as stated begins with 23 which points to 1983, the year the model was introduced.
The CRT has no evidence of any burns and is both bright and sharp. That would suggest that the unit had only light use for all its 29 years. I have a number of 3570As in my lab that are still running after 39 years! When it's built right it doesn't expire just because support vanishes ;-).
When booting the unit comes up, does its ROM tests where it reports the two block errors, does its RAM test (which passes) and then stalls with ROM test light still on and beeper now blaring. I've examined all of the MC68000 pins that come to J3 on the exposed top of the card and they all appear to be robust logic levels. I've also reached in to the chip select lines on the ROM blocks and they also look reasonable as TTL. I have not yet tried the more tedious effort of probing all of the buffered address and data lines on the EPROMs. In like manner I've not yet changed out all the EPROMs with new ones using a dump found on the web for version C code. All eight are soldered in :-(. I would like to think that having two go out at the same time is most likely not the actual EPROMs.
Thanks,
Gerald
这个特定的单元已有29年历史，足以容纳EPROM数据保留问题。
许多集成电路上的日期代码显示1984年末的工作周，因此我认为它是在1985年制作的。所述的S / N从23开始，指向1983年，即模型引入的那一年。
CRT没有任何烧伤证据，既明亮又清晰。
这表明该单位29年来只有轻微使用。
我的实验室里有3570个，在39年后仍在运行！
当它构建正确时它不会因为支持消失而过期;-)。
当启动设备启动时，它的ROM测试报告两个块错误，它的RAM测试（通过）然后停止ROM测试灯仍然打开和蜂鸣器现在响亮。
我已经检查了卡上裸露的顶部的所有MC68000引脚，它们看起来都是强大的逻辑电平。
我也接触到ROM模块上的芯片选择线，它们看起来也像TTL一样合理。
我还没有尝试过更乏味的探测EPROM上所有缓冲地址和数据线的工作。
以同样的方式，我还没有使用在网络上找到版本C代码的转储来更新所有新的EPROM。
所有八个都焊接在:-(。我想有两个同时出去很可能不是真正的EPROM。谢谢，杰拉尔德
以上来自于谷歌翻译
以下为原文
This particular unit is 29 years old, old enough to have EPROM data retention issues. The date codes on many of the ICs show work weeks late in 1984, therefore I believe it to have been made in 1985. The S/N as stated begins with 23 which points to 1983, the year the model was introduced.
The CRT has no evidence of any burns and is both bright and sharp. That would suggest that the unit had only light use for all its 29 years. I have a number of 3570As in my lab that are still running after 39 years! When it's built right it doesn't expire just because support vanishes ;-).
When booting the unit comes up, does its ROM tests where it reports the two block errors, does its RAM test (which passes) and then stalls with ROM test light still on and beeper now blaring. I've examined all of the MC68000 pins that come to J3 on the exposed top of the card and they all appear to be robust logic levels. I've also reached in to the chip select lines on the ROM blocks and they also look reasonable as TTL. I have not yet tried the more tedious effort of probing all of the buffered address and data lines on the EPROMs. In like manner I've not yet changed out all the EPROMs with new ones using a dump found on the web for version C code. All eight are soldered in :-(. I would like to think that having two go out at the same time is most likely not the actual EPROMs.
Thanks,
Gerald
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