Chuck ?
My wording was probably less than precise, but ?never comes out of reset? means that it
never POSTs. Nothing on the screen. No cursor. No boot message. No BASIC. Keyboard does
reset though (I see the three LEDs blink on, then off). I watched for a good 5 minutes
before giving up. It?s been a long time since I worked with this machine but I?m pretty
sure there is a sign-on banner or something.
For comparison, I pulled my old original PC (64k/256k mobo) with expansion unit and 10mb
HD and it took an excruciatingly long time to boot, but it did have a blinking underline
cursor on the screen while it thought about booting.
Rich
--
Rich Cini
http://www.classiccmp.org/cini
http://www.classiccmp.org/altair32
On 5/28/16, 10:30 PM, "cctalk on behalf of Chuck Guzis" <cctalk-bounces at
classiccmp.org on behalf of cclist at sydex.com> wrote:
On 05/28/2016 07:17 PM, Chuck Guzis wrote:
Bear in mind that the PC AT BIOS during POST goes
through some
rather arcane protected-mode memory tests, using the CMOS "why did I
get here" byte when coming out of reset.
...which reminds me--check the status of the "programmed reset" line
coming from the keyboard controller.
--Chuck