Difference between revisions of "Atari 7800 Hardware"
Jump to navigation
Jump to search
(Created page with "This page is used to document details of the hardware for the Atari 7800. ==Motherboard== A peculiarity of 7800 motherboards is that the top and bottom of the boards may ...") |
|||
(8 intermediate revisions by one other user not shown) | |||
Line 1: | Line 1: | ||
This page is used to document details of the hardware for the [[Atari 7800]]. | This page is used to document details of the hardware for the [[Atari 7800]]. | ||
+ | |||
+ | ==Cartridge Slot== | ||
+ | {| class="mw-collapsible mw-collapsed wikitable" style="width: 500px;" | ||
+ | ! colspan=4 width="250"|Cartridge Slot Pinout | ||
+ | |- | ||
+ | ! Pin # !! Function | ||
+ | |- | ||
+ | | 1 || Read/Write (Write=LOW) | ||
+ | |- | ||
+ | | 2 || HALT | ||
+ | |- | ||
+ | | 3 || D3 | ||
+ | |- | ||
+ | | 4 || D4 | ||
+ | |- | ||
+ | | 5 || D5 | ||
+ | |- | ||
+ | | 6 || D6 | ||
+ | |- | ||
+ | | 7 || D7 | ||
+ | |- | ||
+ | | 8 || A12 | ||
+ | |- | ||
+ | | 9 || A10 | ||
+ | |- | ||
+ | | 10 || A11 | ||
+ | |- | ||
+ | | 11 || A9 | ||
+ | |- | ||
+ | | 12 || A8 | ||
+ | |- | ||
+ | | 13 || +5 VDC | ||
+ | |- | ||
+ | | 14 || Ground | ||
+ | |- | ||
+ | | 15 || A13 | ||
+ | |- | ||
+ | | 16 || A14 | ||
+ | |- | ||
+ | | 17 || A15 | ||
+ | |- | ||
+ | | 18 || External audio from cart | ||
+ | |- | ||
+ | | 19 || A7 | ||
+ | |- | ||
+ | | 20 || A6 | ||
+ | |- | ||
+ | | 21 || A5 | ||
+ | |- | ||
+ | | 22 || A4 | ||
+ | |- | ||
+ | | 23 || A3 | ||
+ | |- | ||
+ | | 24 || A2 | ||
+ | |- | ||
+ | | 25 || A1 | ||
+ | |- | ||
+ | | 26 || A0 | ||
+ | |- | ||
+ | | 27 || D0 | ||
+ | |- | ||
+ | | 28 || D1 | ||
+ | |- | ||
+ | | 29 || D2 | ||
+ | |- | ||
+ | | 30 || Ground | ||
+ | |- | ||
+ | | 31 || IRQ | ||
+ | |- | ||
+ | | 32 || Phase 2 clock | ||
+ | |} | ||
+ | |||
+ | Sources: | ||
+ | * [http://atarihq.com/danb/7800cart/a7800cart.shtml http://atarihq.com/danb/7800cart/a7800cart.shtml] | ||
+ | * [http://www.atarimax.com/jindroush.atari.org/7800cart.html http://www.atarimax.com/jindroush.atari.org/7800cart.html] | ||
+ | |||
+ | ==Processor== | ||
+ | The Atari 7800's processor is a variation of the 6502 named ''Sally''. | ||
==Motherboard== | ==Motherboard== | ||
Line 10: | Line 88: | ||
Atari-7800-CAO25233-002-revA-board-bottom.jpg|CAO25233-002 REV A (bottom) | Atari-7800-CAO25233-002-revA-board-bottom.jpg|CAO25233-002 REV A (bottom) | ||
</gallery> | </gallery> | ||
+ | |||
+ | [[Category:Hardware]] |
Latest revision as of 07:54, 6 July 2021
This page is used to document details of the hardware for the Atari 7800.
Cartridge Slot[edit]
Cartridge Slot Pinout | |||
---|---|---|---|
Pin # | Function | ||
1 | Read/Write (Write=LOW) | ||
2 | HALT | ||
3 | D3 | ||
4 | D4 | ||
5 | D5 | ||
6 | D6 | ||
7 | D7 | ||
8 | A12 | ||
9 | A10 | ||
10 | A11 | ||
11 | A9 | ||
12 | A8 | ||
13 | +5 VDC | ||
14 | Ground | ||
15 | A13 | ||
16 | A14 | ||
17 | A15 | ||
18 | External audio from cart | ||
19 | A7 | ||
20 | A6 | ||
21 | A5 | ||
22 | A4 | ||
23 | A3 | ||
24 | A2 | ||
25 | A1 | ||
26 | A0 | ||
27 | D0 | ||
28 | D1 | ||
29 | D2 | ||
30 | Ground | ||
31 | IRQ | ||
32 | Phase 2 clock |
Sources:
- http://atarihq.com/danb/7800cart/a7800cart.shtml
- http://www.atarimax.com/jindroush.atari.org/7800cart.html
Processor[edit]
The Atari 7800's processor is a variation of the 6502 named Sally.
Motherboard[edit]
A peculiarity of 7800 motherboards is that the top and bottom of the boards may have diferent revision labels.
CAO2523x[edit]
The top of this board is labeled 'CA025234' and the bottom is labeled 'CA025233-002 REV A'.