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9900 - Revision history
2026-05-07T05:24:41Z
Revision history for this page on the wiki
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WikiSysop: Created page with "'''16-bit Microprocessor''' =Family table= {| border="1" cellpadding="4" cellspacing="0" ! Model ! Description ! Package |- | TI990/9 || Early multi-chip CPU for minicomp..."
2022-01-11T10:17:14Z
<p>Created page with "'''16-bit Microprocessor''' =Family table= {| border="1" cellpadding="4" cellspacing="0" ! Model ! Description ! Package |- | TI990/9 || Early multi-chip CPU for minicomp..."</p>
<p><b>New page</b></p><div>'''16-bit Microprocessor'''<br />
<br />
=Family table=<br />
{| border="1" cellpadding="4" cellspacing="0"<br />
! Model <br />
! Description<br />
! Package<br />
|-<br />
| TI990/9 || Early multi-chip CPU for minicomputer systems, 1974 || <br />
|-<br />
| TI990/10 || Multi-chip implementation for minicomputer systems, 1975 || <br />
|-<br />
| TI990/12 || Multi-chip implementation, faster than 990/10 || <br />
|-<br />
| TMS9900 || Single chip implementation, 1976, used in the TI-99/4(A) computer || [[:Category:DIP64-750mil|DIP64-750mil]]<br />
|-<br />
| TMS9940 || Microcontroller with 2KB ROM, 128B RAM, decrementer, CRU bus, 1979 || <br />
|-<br />
| TMS9980<br>TMS9981 || 8-bit databus versions of TMS9900 || [[:Category:DIP40-600mil|DIP40-600mil]]<br />
|-<br />
| TMS9985 || TMS9940 with 8KB ROM, 256B RAM, and an 8-bit external bus, c. 1978 (never released) || <br />
|-<br />
| TMS9989 || Improved 9980, used in military hardware || [[:Category:DIP40-600mil|DIP40-600mil]]<br />
|-<br />
| TMS9995 || Improved TMS9985-like, no ROM. Used in the TI-99/2 & TI-99/8 prototypes, the [[Tomy Tutor]] and the Geneve computer || [[:Category:DIP40-600mil|DIP40-600mil]]<br />
|-<br />
| TMS99105 || Baseline member of the TMS99000 microprocessor family || <br />
|- <br />
| TMS99110 || TMS99000 family microprocessor with floating point instructions pre-programmed into the on-chip Macrostore ROM memory || <br />
|-<br />
| TMS99120 || TMS99000 family microprocessor with run-time support routines for the PASCAL high-level language pre-programmed into<br>the on-chip Macrostore ROM memory (microprocessor was announced but may never have been commercially produced) || <br />
|}<br />
<br />
=Pinout=<br />
<pre><br />
TMS9900<br />
SDIP64-750mil<br />
+---\/---+<br />
VBB | 1 64| *HOLD<br />
Vcc | 2 63| *MEMEN<br />
WAIT | 3 62| READY<br />
*LOAD | 4 61| *WE<br />
HOLDA | 5 60| CRUCLK<br />
*RESET | 6 59| Vcc<br />
IAQ | 7 58| NC<br />
PHASE1 | 8 57| NC<br />
PHASE2 | 9 56| D15<br />
A14 |10 55| D14<br />
A13 |11 54| D13<br />
A12 |12 53| D12<br />
A11 |13 52| D11<br />
A10 |14 51| D10<br />
A9 |15 50| D9<br />
A8 |16 49| D8<br />
A7 |17 48| D7<br />
A6 |18 47| D6<br />
A5 |19 46| D5<br />
A4 |20 45| D4<br />
A3 |21 44| D3<br />
A2 |22 43| D2<br />
A1 |23 42| D1<br />
A0 |24 41| D0<br />
PHASE4 |25 40| Vss<br />
Vss |26 39| NC<br />
Vdd |27 38| NC<br />
PHASE3 |28 37| NC<br />
DBIN |29 36| IC0<br />
CRUOUT |30 35| IC1<br />
CRUIN |31 34| IC2<br />
*INTREQ |32 33| IC3<br />
+--------+<br />
<br />
TMS9980<br />
DIP40-600mil<br />
+---\/---+<br />
*HOLD | 1 40| *MEMEN<br />
HOLDA | 2 39| READY<br />
IAQ | 3 38| *WE<br />
A13/CRUOUT | 4 37| CRUCLK<br />
A12 | 5 36| Vdd<br />
A11 | 6 35| Vss<br />
A10 | 7 34| CKIN<br />
A9 | 8 33| D7<br />
A8 | 9 32| D6<br />
A7 |10 31| D5<br />
A6 |11 30| D4<br />
A5 |12 29| D3<br />
A4 |13 28| D2<br />
A3 |14 27| D1<br />
A2 |15 26| D0<br />
A1 |16 25| INT0<br />
A0 |17 24| INT1<br />
DBIN |18 23| INT2<br />
CRUIN |19 22| Ø3<br />
Vcc |20 21| Vbb<br />
+--------+<br />
</pre><br />
<br />
=Frequency=<br />
'''9900'''<br><br />
Set reader to FREQ, put black probe to GND, red probe to 8,9,25,28,60 to measure CPU clock<br><br />
<br />
'''9980'''<br><br />
Set reader to FREQ, put black probe to GND, red probe to 22,34,37 to measure CPU clock<br><br />
<br />
=External links=<br />
[https://en.wikipedia.org/wiki/Texas_Instruments_TMS9900 TMS9900 page on Wikipedia]<br><br />
[https://www.cpu-world.com/CPUs/TMS9900/index.html 9900 page on CPU-World]<br><br />
[https://www.cpu-world.com/CPUs/TMS9980/index.html 9980 page on CPU-World]<br><br />
[https://www.cpu-world.com/CPUs/TMS9995/index.html 9995 page on CPU-World]<br />
<br />
=Files=<br />
<gallery widths="150px"><br />
File:9980.pdf|TMS9980 Datasheet<br />
</gallery><br />
<br />
[[Category:CPU]]<br />
[[Category:DIP40-600mil]]<br />
[[Category:DIP64-750mil]]</div>
WikiSysop