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Benladouche
Joined: 05 Nov 2006
Posts: 2
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 Posted: Sun Nov 05, 2006 5:44 am Post subject: cpu identification |
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Hello
I have a doubt for some cpus.
this ST CPU are they really MCU or CPU ? => here
I don't found information for the siemens SAB 8237A-5-P and mitsubishi ML58255AP-5 ==>here
I want to know if it's CPU, FPU, or MCU .
thanxs |
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Sun Nov 05, 2006 7:28 am Post subject: |
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| The ST 6802 is 6800 CPU plus 128 bytes of RAM wich basically makes it ROMless MCU. Second board is standard XT compatible motherbord. 8237 is DMA controller, 8255 is programmable parallel port interface. Your board is missing the CPU. One of the empty 40-pin sockets takes 8088 CPU, other one will take 8087 floating point coprocessor. |
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Benladouche
Joined: 05 Nov 2006
Posts: 2
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| Posted: Sun Nov 05, 2006 10:41 am Post subject: |
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 You have a very good knowledge about it .
Thanx a lot . |
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chip68
Joined: 19 Oct 2004
Posts: 1024
Location: Central Pennsylvania
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| Posted: Sun Nov 05, 2006 11:13 am Post subject: |
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The ST 68B21 is a peripheral interface adapter, btw.
- CMW |
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