Editing Atari 5200 (section)

== Integrated circuits ==

<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table" style="width:95%;"
|+'''Chip locations'''
! Function !! Device !! CA018087 !! CA020108 / CA021374
|-
| Microprocessor || Atari C014806 (6502 variant) || U2 || A2
|-
| Display list processor || ANTIC, Atari C012296 || U3 || A3
|-
| Graphics || GTIA, Atari C014805 || U5 || A5
|-
| Sound, pots, keypad scan || POKEY, Atari C012294 || U7 || A7
|-
| System ROM || Atari C019156 (4096 × 8) || U8 || A8
|-
| Reset and video buffer || 4050 || U1 || A1
|-
| Address decode || 74LS139 || U6 || A6
|-
| Keypad multiplexers || 4052 || U9–U13 || A9–A13 (A12, A13 absent on the 2-port)
|-
| DRAM address multiplexers || 74LS258 || U16, U17 || A16, A17
|-
| RAM, 8 × 16 K × 1 DRAM || MB8118 or 4516 family || U18–U25 || A18–A25
|-
| Power on/off latch || 4013 || U29 || A26
|-
| +5 V regulators || 78M05 (Atari C014348) || VR1, VR2 || VR1, VR2
|}

The 6502, ANTIC, GTIA, POKEY and ROM identifications come from Atari's parts lists and the console schematic;<ref name="fsm5200" /><ref name="schem5200">Atari, Inc., ''Atari 5200 Programmable Video Game System'' schematics, sheet 1 (processing, I/O, ROM and RAM) and sheet 2 of 2 (RF switchbox and power supply), 23 February 1983. See [[:File:Schematic Atari5200 4000.png]] and [[:File:Schematic Atari5200 RFSwitchbox 2000.png]].</ref> the remaining functional descriptions are from the Console5 TechWiki, a secondary source.<ref name="console5-5200">Console5 TechWiki, [https://wiki.console5.com/wiki/Atari_5200 "Atari 5200"], chip info and capacitor list. Secondary source: a capacitor-kit vendor's component list, not manufacturer documentation.</ref>

The 5200 schematic marks the RAM as '''MB8118-12''' with the note "typical 8 chips"; Console5 lists the equivalent 4516. Either way these are 16 K × 1 dynamic RAMs, eight of them, giving 16 KB.<ref name="schem5200" /><ref name="console5-5200" />