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Available at Texas Instruments [[TI-99/4A]] computers.

== Pinout ==

On the top

   2                    36
 +----------------------------------+
 | ================================ |
 +----------------------------------+
   1                    35

{| {{border}}
! Pin !! Name    !! Dir    !! Description
|-
| 1   || RESET   || IN     || Resets the system (active high)
|-
| 2   || GND     || -      || Signal groud
|-
| 3   || D7      || IN/OUT || Data bus, bit 7 (least significant)
|-
| 4   || CRUCLK* || OUT    || Inversion of TMS9900 CRUCLOCK pin
|-
| 5   || D6      || IN/OUT || 
|-
| 6   || CRUIN   || IN     || CRU input to TMS9900
|-
| 7   || D5      || IN/OUT || 
|-
| 8   || A15     || OUT    || Address bus, bit 15 / also CRU output bit
|-
| 9   || D4      || IN/OUT || 
|-
| 10  || A13     || OUT    || 
|-
| 11  || D3      || IN/OUT || 
|-
| 12  || A12     || OUT    || 
|-
| 13  || D2      || IN/OUT || 
|-
| 14  || A11     || OUT    || 
|-
| 15  || D1      || IN/OUT || 
|-
| 16  || A10     || OUT    || 
|-
| 17  || D0      || IN/OUT || Data bus, bit 0 (most significant)
|-
| 18  || A9      || OUT    || 
|-
| 19  || VCC     || -      || +5 Volts power supply
|-
| 20  || A8      || OUT    || 
|-
| 21  || GS*     || OUT    || Grom select. Active low is addr in >9800-9FFF
|-
| 22  || A7      || OUT    || 
|-
| 23  || A14     || OUT    || Address bus, bit 14. Select mode: low=data / high=addr
|-
| 24  || A3      || OUT    || 
|-
| 25  || DBIN    || OUT    || Active high = read memory
|-
| 26  || A6      || OUT    || 
|-
| 27  || GRC     || OUT    || GROM clock: color burst of VDP 9918A
|-
| 28  || A5      || OUT    || 
|-
| 29  || VDD     || -      || -5 Volts power supply
|-
| 30  || A4      || OUT    || 
|-
| 31  || GR      || IN     || Active high = GROM ready
|-
| 32  || WE*     || OUT    || Active low = write enable (derived from TMS9900 WE*)
|-
| 33  || VSS     || -      || 
|-
| 34  || ROMG*   || OUT    || Active low if addr in >6000-7FFF
|-
| 35  || GND     || -      || Ground
|-
| 36  || GND     || -      || Ground
|}

== Contributions ==

* [[User:Joakim|Joakim Ögren]]

[[Category:Connector]]