Which RT-11 for an 11/03

[Richard Cini]

That's an awesome find Don, thanks!

Rich

Sent from my iPhone

> On Mar 13, 2016, at 3:23 AM, Don North <north at alum.mit.edu> wrote:
> 
> Ok, filed as: https://github.com/simh/simh/issues/285
> 
>> On 3/12/2016 11:14 PM, Don North wrote:
>> Fixed!
>> 
>> sim> set cpu 11/34 256K fpp
>> sim> set tdc enable
>> sim> attach tdc0 tu58.dsk
>> sim> b tdc0
>> 
>> BOOTING UP XXDP-XM EXTENDED MONITOR
>> 
>> XXDP-XM EXTENDED MONITOR - XXDP V2.5
>> REVISION: F0
>> BOOTED FROM DD0
>> 124KW OF MEMORY
>> UNIBUS SYSTEM
>> 
>> RESTART ADDRESS: 152000
>> TYPE "H" FOR HELP !
>> 
>> In file pdp11_td.c, comment out/delete line 1023 (red) "ctlr->rx_buf = ctlr->obuf[ctlr->obptr++];   /* get first byte */"
>> 
>> This would seem to be priming the read routine, but in fact it is discarding the first byte of the block zero bootstrap.
>> 
>> Don
>> 
>> 
>>    case TD_OPBOO:
>>        if (ctlr->ibptr < 2) {                          /* whole packet read? */
>>            ctlr->ilen = 2;
>>            ctlr->o_state = TD_GETDATA;                 /* get rest of packet */
>>            return;
>>            }
>>        else {
>>            int8 *fbuf;
>>            int i;
>>