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#110270 - 07/12/17 07:09 PM Re: Going old-school [Re: R. Belmont]  
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AJR Offline
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From a notice in Computerworld:

Quote

The Intel IMM 4-90 is a high-speed paper tape reader for Intellec 4 Model 4 and Model 40 microcomputer development systems.

The reader transfers data asynchronously at 200 char./sec. This allows 4,096 bytes to be loaded in an Intellec 4 program memory in less than 30 seconds.

Hardware compatibility is provided by the reader's interface cabling and by the Intellec 4 IMM 4-60 I/O module option, which includes reader input and output ports.


Intel also produced a IMM 8-90 tape reader for use with their 8008 development system.

#110271 - 07/12/17 07:14 PM Re: Going old-school [Re: Vas Crabb]  
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Oh cool, now I have a model number and speed.

#110272 - 07/12/17 07:31 PM Re: Going old-school [Re: Vas Crabb]  
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Vas Crabb Offline
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Updated/pushed with correct model number and speed. It's now the imm4_90 option.

#110729 - 09/05/17 12:51 PM Re: Going old-school [Re: Vas Crabb]  
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http://forum.classic-computing.de/index.php?page=Thread&postID=123960#post123960

Another application of the 4040 ... electronic scales smile


NCR DMV- DEC Rainbow- Siemens PCD- ITT 3030-Oly People- Acorn A5000- Olivetti M20
#110731 - 09/05/17 03:34 PM Re: Going old-school [Re: Vas Crabb]  
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Interesting, like the INTELLEC 4 and the A1 Supply games it uses a 4289 to provide a more conventional ROM/I/O interface (as well as the pair of 4002 chips for scratchpad). In that configuration it uses conventional 8-bit ROMs for program storage, so no need to worry about dumping 4-bit devices. Just remember that it's PMOS so Vdd is negative. (The 4004/4040 always have 8-bit wide program ROM data, they just transfer it one nybble at a time. Using a 4008/4009 pair or a 4289 to do address latching and lane select, you can use conventional 8-bit ROMs instead of the dedicated 4001 chips that handle this stuff themselves.) It will be interesting to see if this thing actually uses any 4040 features.

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