Atari Chips

In each model, there is cpu.
There is also graphics output consisting of Antic and GTIA processors.
For sound output, the Pokey processor is used.
PIA takes care of joystick ports.
MMU, EMMU and FREDDIE are for memory management.
Operating system and Basic are stored in ROMs.
Various other stuff is described here.
System boards and their layout is given here.
65XEM prototypes contain AMY chip for super-sound.

Following is the list of all the released models in 8bit line. If you want to help me make this list complete, open your computer and report me:

the model and its TV norm
all the COxxxxx numbers on all the parts (Uxx number, manufacturer, date YYWW)
don't forget to add crystal values and C0xxxx numbers
all the numbers on the board
number of memory chips (also note empty space)
all the connectors, switches etc.

Computer models

400

800

My 800, NTSC.
Everything socketed.

cpu board CO143-60 REV D
mem board CO14700 REV F	(3x)
pers board CO12989 REV E
main board CO14175
power board CO14176 REV B
antic CO12296D
gtia CO14805
cpu CO14377 (6502)
os roms CO12399B, CO12499B, CO14599B
pokey CO12294
pia CO14795 (R6520)

1200XL

600XL

800XL

My 800 XL, PAL.
In housing is space for some kind of switch near the TV output, blinded. Nothing except Freddie socketed. Manufactured 85/01

board CO25925-001 Rev-R3
cpu CO14806
antic CO21698
gtia CO14889
pia CO14795
pokey CO12294B
freddie CO61991 (socketed)
os CO61598B
basic CO24947A
mmu CO61618
crystal 14.187516
crystal CO16801

Curt Vendel's 800XL, SECAM 'Rose'

board CA024969-001 800XL -Secam ROSE Rev R3 GX-211 4784 8-84
cpu CO14806-12 (U8 - Rockwell 1151-12 0648 8333)
antic CO21698-01 (U7 - AMI 8443MAO)
gtia CO20120-01 (U20 - AMI 8430LG)
pia CO14795-12 (Rockwell R6520 8340)
pokey CO12294-19 (U22 - 8323)
freddie CO61922 (U6 - Citel 8348)
os CO61598B-29 (NCR23128-30 8442)
basic CO24947A-29 (NCR2364-30 8442)

My second 800 XL, NTSC.
In housing is space from 2/3 channel switch. Everything socketed. Manufactured fall 83.

board CO61851 REV C 800XL CA061854
cpu CO14806
antic CO21697
gtia CO14805
pia CO14795 (R6520)
pokey CO12294B
os CO61598B
basic CO60302A (rev B)
delay line CO60472
mmu CO61618
crystal CO61090
modulator UM1652 (channel 2/3 switch input)

other 800 XL, PAL.

board CO61851 REV D 800XL CA024804 REV D 8446
cpu CO14806C-29 NCR 8412
antic CO21698-01 AMI 8444
gtia CO14889-01 AMI 8445
pia CO14795 (R6520-26) 8327
pokey CO12294-22 OKI 
os CO61598B-29 8443
basic CO24947A-29 8442 (REV C)
delay line CO60472-D 8434
mmu CO61618 DMPAL16L8NC 8436
crystal CO16801
crystal CO16112
ram 8x MT4264-15

65XE

My 65XE, PAL.
Has ECI. Manufactured 87/7. Nothing socketed

board CO70067 REV C
cpu CO14806
antic CO21698
gtia CO14889 (8503MED)
pia CO14795
pokey CO12294B
freddie CO61922
os CO61598B
basic CO24947A
mmu CO61618
emmu CO25953
crystal CO70034
crystal CO16801

800XE

130XE

My 130XE, PAL
Manufactured 88/5. Nothing socketed.

board CO70067 REV C
cpu CO14806
antic CO21698
gtia CO14889 (8734MEO)
pia CO14795
pokey CO12294B
freddie CO61991
os CO61598B
basic CO24947A
mmu CO61618
emmu CO25953
crystal CO70034
crystal CO16801

Erhard's 130XE, PAL

Same as above, except for:
board CO70067 REV B

My 130XE, NTSC
Manufactured cca 86/8. Nothing except Antic socketed.

board CO70067 REV B
cpu CO14806C
antic CO21697
gtia CO14805 (8319BEA)
pia CO14795
pokey CO12294B
freddie CO61991
os CO61598B
basic CO24947A
mmu CO61618
emmu CO25953
crystal ? 14318.18 kHz
modulator MDG-VA2305 (Mitsumi) with 2-3 channel switch

Lee Barnes's 130XE, NTSC

Same as above, except for:
board C103579-001 Rev1
has 4x32kb memory chips (MT4067-12)
antic CO21697
gtia CO14805 (8328mqz)
os C300717
crystal CO70032

XI's 130XE, PAL
Manufactured at end of 89. Nothing socketed.

board C103579-001 Rev1
has 4x32kb memory chips (originally)
cpu CO14806
antic CO21698
gtia CO14889 (8927)
pia hitachi HD6821
pokey ? (replaced)
freddie CO61991
os ? (replaced)
basic CO24947A
mmu CO61618
emmu ? (replaced)
crystal CO70034
crystal CO16801

XEGS

My XEGS PAL
Manufactured cca 88/8. Nothing socketed.

board C100417 REV.A
cpu CO14806C
antic CO21698
gtia CO14889
pia CO14795
pokey CO12294B
freddie CO61991
os C101687
mmu C101686
crystal C070035
crystal C016801
modulator C100186, no switch