Number: 1187

Date: 21-May-84 19':22':02

Submitter: Sannella.PA

Source: Masinter.pa

Subject: Arithmetic microcode in 12K control store strange

Assigned To: 

Attn: 

Status: Incomplete

In/By: 

Problem Type: Bug

Impact: Serious

Difficulty: 

Frequency: Once

Priority: Hopefully

System: Language Support

Subsystem: Microcode

Machine: 

Disk: 

Lisp Version: 

Source Files: 

Microcode Version: 

Memory Size: 

File Server: 

Server Software Version: 

Disposition: '
["Masinter.pa" "26-Aug-84 16':03':57" Attn': Status':(Open->Incomplete) Difficulty':(Hard->)]

Description: '
Date': 16 May 84 13':39 PDT'
From': Masinter.pa'
Subject': problem with arithmetic in 12K control store? odd behavior, anyway'
To': LispSupport, Charnley'
cc': Masinter.pa'
'
I set a machine running the "Lines" demo. When I came back, hours later, it was trying to draw lines WAY off the screen and getting into serious trouble. I don''t know why this was happening, but I have some suspicion that it is arithmetic microcode. I will try it again.'


Workaround: 

Test Case: 

Edit-By: Masinter.pa

Edit-Date: 26-Aug-84 16':04':05