Description:
NuBus card provides video mixing and effect features. This example does not have the connectors indicative of the AVID version. Two DE-9S external interfaces for RGB in and out.
Identifying Numbers:
NUVISTA + BASE REV 2.0; NUVISTA + TOP REV 2.0; NUVISTA + MEMORY 10041; NB014081; NM043801; NV050993
Onboard logic: 
Truevision TVG-MIX-V2; Truevision TVG-CVL-V2; Bt Bt473KPJ35; TI TMS34010FNL-50; Truevision TVG-NCA-V2

Description:
NuBus card provides video mixing features? This example is missing the top card and rear bracket, so testing will be delayed.
Identifying Numbers:
TVB-570-V3.0
Onboard logic:
Truevision TVE-BEC-V1 L1A9036 NAS 9348∆ WF57087; Truevision TVE-HUB-V1 L1A7956 NNH 9337∆ WB56113; Truevision TVG-BIC-V3 1670F0205 9336NAS; Truevision TVG-SLC-V1 4L04F1809 9332NAS; AT&T DSP3210 F12 072 9335S 9876874 (x2)

Description:
??? card provides video mixing features? This example does not have the VGA hardware populated.
Identifying Numbers:
TVB-573-V4.0; TVB-583-V3.0
Onboard logic:
Truevision TVE-HUB-V1 L1A7956 NNH 9326∆ WB55146; Truevision TVG-BIC-V3 1670F0205 9336NAS; Truevision TVG-SLC-V1 4L04F1809 9332NAS; AT&T M-DSP3210 F12 072 9249S 9552874; Raytheon 9329KI 22090ROC (x2); Raytheon 9332KJ 22071R1C; Bt Bt473KPJ35 RAMDAC 453 9317 (x2); Philips SAA 7151B WP 240070 DfD93010V1 Y; Philips SAA 7192A WP 590170 DfD9314V1 Y