[sdiy] Chip ID

[Magnus Danielson]

From: "Batz Goodfortune" <batzman at all-electric.com>
Subject: Re: [sdiy] Chip ID
Date: Sat, 04 May 2002 20:04:26 +0930


Batz,

> Well the 8008 was a historical artifact worthy of note at least. That's the 
> second commercially available microprocessor ever made. The first was a 
> 4004.

There was also the 4040, which is a variant of the 4004.

The 4004 (from 71) and 8008 (from 72) is strikingly similar BTW. The
8008 has certainly inherit alot from the 4004. Now, the 8080 and 8085
did inherit the 8008, and the 80886 inherited the 8086... so the PII
processor I have in my computer has inherit aspects from the 4004 -
shockingly.

A datasheet without a blownup chip-die isn't a datasheet - the i8008
datahsheet has one! ;O)

> They had about enough power to bat an eyelid and that was about all. 
> Made by intel some time in the early 70s. I forget when exactly. But when 
> you consider the loveable 6502 came out in 76, you're probably going to 
> have to jump in the "Way back" machine to find out.

The 6502 was two steps forward and one step back. The 8008 has more
registers, six data registers and one accumulator. The 8008 doesn't
tick as quick as the 6502, which formidably stands still by todays
preferences.

> For reference. Intel's micro support chips always started with 82. Like 
> 8259 interrupt controller. 8250/51 UART.

The 8250 where never an Intel chip, it came out of National
Semiconductor, that followed up with the 16450.

The 8251 UART is a different animal altogether.

> And my favorite funky toy, the  8255. triple 8 bit port. all 24/28
> pin chips except the 55 which is again 40.

Popular guy. I guess many of you haven't seen the 8089 IOP (I/O
Processor) or the 80130 (funky realtime support, dynamic memory
handling and object oriented structuring at the assembler level)
support chips of the 8088/8086. I think I have a few of those chips
lying around somewhere...

Cheers,
Magnus