tag:blogger.com,1999:blog-6264947694886887540.post8746377821179438389..comments2024-03-18T15:18:27.236-07:00Comments on Ken Shirriff's blog: Reverse-engineering the flag circuits in the 8085 processorKen Shirriffhttp://www.blogger.com/profile/08097301407311055124noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-6264947694886887540.post-40332698526647351822014-08-04T20:35:41.867-07:002014-08-04T20:35:41.867-07:00There are 7 flags out of which only 5 are accessib...There are 7 flags out of which only 5 are accessible :<br /><br />b7 b6 b5 b4 b3 b2 b1 b0<br />S Z - AC - P - CY<br /><br /> then my question is that among the flags b4 to b7 can the value be A hex.(ie 10 in decimal, bcoz the flag b5 is always 0 and in number 10 b5 should be set to 1)....<br /><br /> By the way, my flag register has a value of A6.Anonymoushttps://www.blogger.com/profile/11272185383556693502noreply@blogger.comtag:blogger.com,1999:blog-6264947694886887540.post-5391443496702447842013-07-21T21:46:10.063-07:002013-07-21T21:46:10.063-07:00This is fantastic. I love to see this level of ana...This is fantastic. I love to see this level of analysis and reverse engineering!<br />Anonymoushttps://www.blogger.com/profile/07084248307594486955noreply@blogger.comtag:blogger.com,1999:blog-6264947694886887540.post-10239072100966143142013-07-19T07:29:11.688-07:002013-07-19T07:29:11.688-07:00Please remember to tag this article with 8085. I l...Please remember to tag this article with 8085. I love your other 8085 articles (esp. the ALU one) and I'd love to be able to see them all by just bookmarking the 8085 label.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6264947694886887540.post-63842695373178289412013-07-18T16:42:04.555-07:002013-07-18T16:42:04.555-07:00Cool. Didn't know anybody cared about 8085...Cool. Didn't know anybody cared about 8085's anymore. I started my career writing firmware in assembly language for scientific instruments based on 8085. We only had 8K ROM on the low end systems, but I was able to shoehorn enough code to run the display and touchpanel input, control the sensors and data acquisition, and provide RS232 and parallel I/O, etc. I think I still have some of my old tricks, including some pretty good math subroutines, even a log approximation I used to generate the logarithmic display. Anonymousnoreply@blogger.com