UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Intel 4004 -50th Birthday (Was 15th Nov 2021)

ortek_service · 23rd Nov 2021, 9:44 am

I found that what I'd bought for £3 (knocked them down from £5) at Harwell Radio Rally back in 2013, was the MCS-40 Chipset (P4040 CPU + P4265 PIO + P4201 Clock Gen), and also a 2112 256 x 4bit SRAM
- Plus included the MCS-40 User's Manual (3rd Ed. Mar'1976) Intel DataBook

So I will have to see what I can do with these (I think I had to repair a broken leg (rotted?) with some soldered on Tinned Copper Wire on one IC, so it had probably lost some value due to that!

Without the proper special SRAM IC's, it looks like needing some address-counter registers to interface to conventional parallel address SRAM's. The same for the ROM addressing.

23rd Nov 2021, 9:44 am	#14
ortek_service Octode Join Date: May 2018 Location: Northampton, Northamptonshire, UK. Posts: 1,444	Re: Intel 4004 -50th Birthday (Was 15th Nov 2021) I found that what I'd bought for £3 (knocked them down from £5) at Harwell Radio Rally back in 2013, was the MCS-40 Chipset (P4040 CPU + P4265 PIO + P4201 Clock Gen), and also a 2112 256 x 4bit SRAM - Plus included the MCS-40 User's Manual (3rd Ed. Mar'1976) Intel DataBook So I will have to see what I can do with these (I think I had to repair a broken leg (rotted?) with some soldered on Tinned Copper Wire on one IC, so it had probably lost some value due to that! Without the proper special SRAM IC's, it looks like needing some address-counter registers to interface to conventional parallel address SRAM's. The same for the ROM addressing.