TI CC-40 RAM/ROM card

Overview

The TI CC-40 has a cartridge port that can accommodate either a plug-in cartridge with pre-loaded applications in a ROM (e.g., Finance, Statistics, etc.), or RAM cartridges that can have 8K bytes or 16K bytes of constant memory. Unfortunately, the TI CC-40 was not well supported by TI during its lifetime thus making the ROM or RAM cartridges hard to obtain. This new memory cartridge offers a unique approach to providing ROM or RAM based storage for the CC-40.

The memory cartridge can function as either a ROM or RAM cartridge with the simple slide of a switch. When selected, the ROM section has 16 x 32K byte pages available, each page can be selected by using the rotary HEX switch. When the RAM is selected, this can function as either a 16K byte addition, or overlay, to the main RAM used by BASIC or as 16 x 32K byte pages that can be selected by the rotary HEX switch. The 16 x 32K byte RAM pages, in conjunction with a machine code app (see Annex), can be used to store program images from the main CC-40 memory.

The RAM section uses a 512K byte static RAM chip that has battery backup powered by a CR2032 button cell battery. The CR2032 should provide backup power to the RAM for a few months if the cartridge is without power from the TI CC-40’s AA batteries. The backup battery is intended to protect the memory while the main AA batteries are being swapped. They also allow the cartridge to be moved to other machines while preserving the contents. A CR2032 is included.

See the Downloads and Documentation tab for User’s Manual.

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