[Info-vax] VMS on Raspberry Pi 5

[John Dallman]

In article <JMO4N.30819$_Oab.16349 at fx15.iad>,
scott at alfter.diespammersdie.us () wrote:

> "Let's build a 16-bit computer...but hobble it with an 8-bit bus, 
> and make it access most of the available RAM through a one-byte 
> window into memory that's only directly attached to the video 
> processor, and implement BASIC in a pseudocode-like language 
> that itself gets interpreted at runtime on the CPU.  What could 
> possibly go wrong?"

Just remember, adding 1 to a register involves the instruction fetch,
then fetching the register's value out of RAM, doing the increment and
writing the register back to RAM. They were /professionals/ at making
things slower. 

<https://en.wikipedia.org/wiki/TMS9900#Architecture>

John