DATAMATH CALCULATOR MUSEUM
|This TI-73 with the date
code I-0199 was manufactured by Inventec in Taiwan in January 1999.
|The main printed circuit board
(PCB) of the TI-73 manufactured in 1999 is
completely different to the
previous TI-83. The Toshiba T6C79 Application Specific CPU was replaced by a two-chip approach based on
a discrete Zilog Z-80 CPU and a Texas Instruments TI REF 9815455 ASIC.
|The PCB of this TI-73 manufactured
beginning of 1999 with the classic Z80 based architecture. The
Flash ROM AM 29F400 stores up to 512k Byte Program and the SRAM Epson SRM2B256 sports 32k Byte capacity.
|This TI-73 hosts the ASIC
TI REF 9815455 used later in the TI-83 Plus design.
driver Toshiba T6A04 of the TI-73 manufactured in January 1999.
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© Mark Bollman and Joerg Woerner, August 3, 2008. No reprints without written permission.