Project Name: Synth

Designer: Jim Cherry

Filed on: [ivy]<speech>Synth>Synth.history

History:

8/29/79Design completed, Rowson’s DRC performed.
8/3/80[ivy]<speech>Synth>Synth.cif 8/29/80 Fabricated on XPA879

1/20/80Simulation performed. Multiplier timing bug discovered and fixed.
1/28/80[ivy]<speech>Synth>Synth.cif 1/28/80 Fabricated on MPC380
4/80Layout bug in multiplier discovered and fixed.
5/21/80Charge sharing bug in multiplier LSBtime gating discovered .
5/27/80[ivy]<speech>Synth>Synth.Synth.ic!1Fabricated on MPC580
7/20/80[ivy]<speech>Synth>Synth.Synth.ic!1 Fabricated on MPC780
11/6/80New library pads, including PadInBuffered (Synth.ic!2)
11/17/80Design rule error in ClockDriver (2x2 lambda corner-corner dif-dif) fixed (Synth.ic!3).
11/20/80Old 11/6/80 version passed Baker’s DRC except for error corrected 11/17/80.
1/81Testing:
MPC580 F MEC 11 tested, 3 (l=2.5m) functional chips found. Vbb from -1V to -5V.
MPC780 BG AMI 3 tested, all bad. Timing worked on a few.
1/25/80[ivy]<speech>Synth>Synth.Synth.ic!3 Fabricated on MPC11A with l=2.0m, l=2.5m.