Programming for the Alto's Mesa

On 6/21/16 8:25 AM, Josh Dersch wrote: Alto software evolved throughout the 70's. It started out bare-bones as they bootstrapped themselves up. Mesa was developed in parallel, as was Smalltalk. Mesa is an Algol-like strongly typed language with the notion of modules and with internal and external interface. This is all documented on bitsavers and in the source tree at CHM. Mesa is a bit too big to run comfortably even on the max memory Alto with two disk drives. By the time the language was in wider use they had D-machines to run it on. SDD stayed with Mesa for their product development, PARC CSL evolved Mesa into Cedar, with things like integrated garbage collection. The build system used in XDE and the D-machines is extremely powerful. Builds were completely distributed across many servers with the distributed build system managing the packaging and dependencies.