The Gary chip provides bus traffic control signals for the A500/A600/A2000 address and data bus. It was a consolidation of a large amount of descrete 74-series components and PALs on the A1000. The original GARY chip in the earlier Rev 4.x series shipment of the A2000 may have been the initially outsoured component from Toshiba. C= Field Service Bulletins suggest replacing it with the now-common MOS-made version.
The Fat Gary in the A3000D/T & A4000D/T is a PLCC chip, and does similar duties in those machines.
| Name |
Part Number |
Used In |
| Gary (5718) |
318072-01 |
A2000 |
| Gary (5719) |
318072-01 |
A500, A500+ |
| Fat Gary 41 (4393) |
390540-02 |
A3000, A4000 |
| Fat Gary 41 (4791) |
390540-02 |
A3000 |