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3.4 HW-Error and Patch List

The following bugs have been found with the board and need to be observed when

working with this tool:

Date

27/07/00

Hardware –REV 1.0 bug fix for missed WRx1 on GAL

patch wire insert on Pin 7

23/10/00

Hardware –REV 1.0 bug fix for SRAM byte access

updated GAL with V2.0

24/10/00

Hardware –REV 1.0 bug fix for wrong address line

changed A0 to A18 on RAM

changed A1 to A19 on RAM

31/10/00

Hardware –REV 1.0 bug fix for short circuit JP21 BREQ

changed JP21 to 1BREQ

06/06/01

Hardware-REV2.0 redesign with bug fix up to V1.04

23/05/03

Hardware-REV2.0 bug fix for floating CS (JP29-JP34) in case of

unused SRAM on board, insert 10k pull-up at CS (JP29-JP34)

3.5 Figures

Figure 1: Illustrated Board Components................................................................................. 6

Figure 2: Block diagram - Level-Shifter board ........................................................................ 7

Figure 3: Modification of Pin-Header Board MB2197-127 ...................................................... 8

Figure 4: Installation Level-Shifter board ................................................................................ 9

UG-910005-24

LEVELSHIFTER BOARD

Chapter 3 Appendix

HW-Errors and Patches

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Version

V1.01

V1.02

V1.03

V1.04

V2.00

V2.01