25 Jan
2005
25 Jan
'05
3:11 a.m.
Anyone have any old technical white papers on the MOS
6507, I know its
just a slight variant of the 6502, but I would like to look over the
original technical specifications for the chip, pinouts, opcodes,
instruction set, etc...
There are no specific documents on it. It's in the MCS650x data sheet.
It's just a 6502 die in a smaller 28-pin DIP package with not all of the
pins bonded out. Specifically, A12 through A15, RDY, /NMI, SYNC, SO,
three NC pins, and one Vss pin are not available.
The pinout is:
/RES 1 28 Ph2 out
Vss 2 27 Ph0 in
Ph1 out 3 26 R/W
/IRQ 4 25 D0
Vcc 5 24 D1
A0 6 23 D2
A1 7 22 D3
A2 8 21 D4
A3 9 20 D5
A4 10 19 D6
A5 11 18 D7
A6 12 17 A11
A7 13 16 A10
A8 14 15 A9
I'm looking for the Synertek 6516 data sheet, and Synertek technical
notes 34 and 40. The 6516 was to be a 16-bit extension of the 6500
family, years before the 65802/65816. Synertek published a data sheet
in mid 1978, but the part was never put into production.