FAQ
•
Search
•
Login
Register
View unanswered posts
|
View active topics
It is currently Wed Apr 24, 2024 11:57 pm
Board index
»
Programmable logic
All times are UTC
HDL versions of HP calculator CPUs
Page
1
of
1
[ 1 post ]
Print view
Previous topic
|
Next topic
HDL versions of HP calculator CPUs
Author
Message
BigEd
Joined:
Wed Jan 09, 2013 6:54 pm
Posts:
1783
HDL versions of HP calculator CPUs
Might be of interest - HP's calculators ran on an inhouse CPU design with a 14 digit BCD floating point representation:
http://www.hpmuseum.org/techcpu.htm
http://web.cecs.pdx.edu/~rc/Projects/HD ... /vger.html
and here are a couple of (re)implementations:
VHDL:
https://github.com/vhdlnerd/classicHp
(may be a work in progress)
Verilog:
http://www.systemyde.com/hp41/hardware.html
(via the announcement thread at
http://www.hpmuseum.org/forum/thread-994-post-7809.html
)
Fri Apr 04, 2014 7:12 pm
Display posts from previous:
All posts
1 day
7 days
2 weeks
1 month
3 months
6 months
1 year
Sort by
Author
Post time
Subject
Ascending
Descending
Page
1
of
1
[ 1 post ]
Board index
»
Programmable logic
All times are UTC
Who is online
Users browsing this forum:
Applebot
and 15 guests
You
cannot
post new topics in this forum
You
cannot
reply to topics in this forum
You
cannot
edit your posts in this forum
You
cannot
delete your posts in this forum
You
cannot
post attachments in this forum
Search for:
Jump to:
Select a forum
------------------
General Discussions
Newbies
Software
General programming
Languages and tools
Kernels and operating systems
Hardware
Hardware in general
CPU/MCU choices and designs
Implementation and Construction
Programmable logic
Simulation and emulation
Nostalgia
Projects
Anycpu.org