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From: Timothy L. <tl...@ro...> - 2003-02-18 21:50:19
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> It looks like this bit of code in start32.S > > /* Save the stack pointer */ > cs > movw %sp, RADDR(real_sp) > > Which when modified to say: > > /* Reload %ds */ > movw %cs, %ax > movw %ax, %ds > > /* Save the stack pointer */ > movw %sp, RADDR(real_sp) > > > Works. So it looks like I have found a 486 bug with respect to segment I can confirm that a clean cvs with the above change will allow my 486 to recognize the NIC and xfer a ltsp kernel. Nice work Eric, I thought I was going to have to break down and learn assembly. However, from there, the PC reboots. (That was using the 3c509 nic with the udelay replaced by DELAY. Any thoughts on why udelay doe not work correctly on my 486 would be welcomed as well). The reboot behavior was noted when I was working on the sundance driver. I thought it was related to that driver, but maybe not. Tim |
