About old homebrew computers, 6502 and Z80
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Old-Hans
Joined: 18 Jan 2010 Posts: 1 Location: Belgium
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Posted: Tue Jan 19, 2010 1:22 am Post subject: Welcome |
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Hello Hans,
As a new member I have as first a remark about the use of SBC. This term orginates from Intel and later also used by NS for their series of industrial boards SBC 80/xx wich do have fixed dimension 6.375"x12" and placement of the connectors for bus on one edge and I/O + RS232 on the other and are inserted in a cardcage with a backplane for interconnection of the busses and powersupply of these boards.
Second a question. Do You, or some body else, know the pinout from the 4mb 30pin dram memcard or some place where I can fing that. I have those and want to use them in a Z180, Z80 setup.
Groetjes,
Old-Hans _________________ Groetjes,
Old-Hans
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hanso Site Admin

Joined: 05 Nov 2007 Posts: 48
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Posted: Wed Jan 20, 2010 1:23 pm Post subject: Re: Welcome |
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Welcome!
| Old-Hans wrote: |
As a new member I have as first a remark about the use of SBC. This term orginates from Intel and later also used by NS for their series of industrial boards SBC 80/xx wich do have fixed dimension 6.375"x12" and placement of the connectors for bus on one edge and I/O + RS232 on the other and are inserted in a cardcage with a backplane for interconnection of the busses and powersupply of these boards.
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True, SBC as short for Single Baord COmputer is one of the names you can stick to those simple microprocessor based PCB's. Monoboard, microprocessor system are also applicable.
I define SBC loosely as a small limited selfcontained microprocessor based computer, on one PCB, with a simple interface to control the computer. Often that interface is a small keyboard and simple character/hex digit display, though serial interfaces also are common. Easy access to free I/O lines is also a common factor. Cases are rare, the hardware is visible!
Some systems are on the edge of this definition, for example the Apple 1 or the OSI 600, with a video interface and full keyboard.
So maybe Small Binary Computers is a better acronym
| Old-Hans wrote: |
Second a question. Do You, or some body else, know the pinout from the 4mb 30pin dram memcard or some place where I can fing that. I have those and want to use them in a Z180, Z80 setup.
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Have a look at my MSX website, where PC SIMMs like the 30 pin 1 MB are used for enhancing the Z80 based MSX machine. _________________ http://www.hansotten.com website
http://weblog.hansotten.com blog |
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