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| 1 | +If you need to BOOT the gateway do the following: |
| 2 | + 1. Take the key which is on the right side of the processor on |
| 3 | + the cardboard box, and unlock the cpu. |
| 4 | + 2. Halt the cpu. |
| 5 | + 3. Load the address 166244 (double check this. This address is also |
| 6 | + listed on the front of the CPU). |
| 7 | + 4. Then put 1100 in the sense switches and press start. You can |
| 8 | + watch it boot on the heath. $ means we sent a packet. ! means |
| 9 | + we received an EFTP data, T means timeout, and R means retransmitted |
| 10 | + the last EFTP ack. Usually you see something like |
| 11 | + $!$!$TT$R$!$!$!$!....etc If too many TTTTTs happen then you |
| 12 | + may have to restart everything. |
| 13 | + 5. LEAVE 1100 in the sense switches. If the gateway crashes it |
| 14 | + does an auto reboot. 1100 is the number of the file on the 2020 |
| 15 | + which is booted. If for some reason the 2020 is down, use 1000 |
| 16 | + instead which is the same boot file on the 10. |
| 17 | + 6. CAUTION: Don't try and boot the gateway when the 10 is loaded |
| 18 | + or the 2020 is running CLASS 0. The EFTP sends on these systems |
| 19 | + sometime hang in these situations. |
| 20 | + 7. LOCK the CPU and put the key back where you found it. |
| 21 | + 8. By setting bit 15 while the gateway is running, you can |
| 22 | + get status reports on the Heath every 13 seconds. |
| 23 | + DO NOT leave bit 15 set if you are not intending to |
| 24 | + watch these reports. It slows down the throughput |
| 25 | + considerably to output these, and there are only |
| 26 | + for brief diagnostics... |
| 27 | + |
| 28 | +If you need to restart the gateway. Do 1 and 2 above. Load 1100 and |
| 29 | +just start. That is why 1100 is used for the most frequently booted |
| 30 | +file, since it is easy to forget to change the boot file number to |
| 31 | +the start address number when restarting in a HURRY. So I just use |
| 32 | +1100 for everything, but NOT for the same file on different systems. |
| 33 | +I have never booted from the 10 since I could boot from the 2020, |
| 34 | +since the 2020 is much faster and usually less loaded. The boot |
| 35 | +should take about 30 seconds. |
| 36 | + |
| 37 | +If we should have hardware problems with the gateway, then the following |
| 38 | +diagnostics reside on <pup>: |
| 39 | + 1. xdboard0.lda This tests the 160000 addressed board. |
| 40 | + It can test the other board by just changing |
| 41 | + its address and placing it in the correct |
| 42 | + slot on the backplane, ie, where the 160000 |
| 43 | + board resides. |
| 44 | + 2. xdecho.lda This is an echo server. |
| 45 | + |
| 46 | +These can only be loaded via a tty line and Nick knows how to do this. |
| 47 | +If there are CPU or memory problems, Nick and Bud know of the pdp11 |
| 48 | +diagnostics on the <pdp11> directory. |
| 49 | + |
| 50 | +Bill |
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