Dear all: > >. ADBUS4 is connected to nNOR_WP. > Testing this on a board I've reworked with 5% resistors on R70 and R74, > and using 82R for R74 instead of 80R, I get 0.025V on nNOR_WP when set > low, and 1.27V when set high. > Unfortunately, the FT2232 resets ADBUS4 to high :-( OpenOCD sets it low. > The M58WR016QT data sheet says that we need at least 1.3V for a "high" > on VPP. So those 1.27V are slightly too low. They're close enough to > make this work on
Oh~ I think we must have a conclusion on debug board v3. If nobody wants to write code control ADBUS4, I want remove R74 and R71 will be 80K. I keep R2505 =100K. Therefore, the ADBUS4 doesn't control /NORWP. When GTA02 plugs the debug board and disable the NOR_WP. Best Wishes~ ______________________________________________ Allen Chang ( 張 吉 隆 ) First International Computer Inc. 7F, No.300, Yang Guang St., NeiHu, Taipei, 114, Taiwan Tel: +886-2-8751-8751 Ext: 6171 Fax: +886-2-8751-8739 Email:[EMAIL PROTECTED]
