I326@VMT.SCP.AC.UK ("I326 at VMTEACH Jim N. Deakin") (08/15/90)
I'm looking at eforth, planning to convert it for a 68000 based machine, and notice that the PC version uses separate code and name stacks. I know that F-PC uses a similar system to get round the chip's 64k segment limitations, but this eforth is contained in one segment, so I can't really see any advantage in this system. This has probably been debated here before, so I would appreciate it if somebody could explain it to me. Also, for anyone who knows, is this arrangement part of the eforth spec. ? I would rather have the word's head and body contiguous, making for a simpler memory map if it's up to the individual implementor. Thanks for any help, ......................................................................... From: Jim Deakin, | Systems Support, | This space intentionally Sheffield Polytechnic, | Computer Services, | left blank. Heriot House, | S. Yorks. | England. | ......................................................................... Email on: JANET : I326@uk.ac.scp.vmt INTERNET or UUCP : I326%vmt.scp.ac.uk@nsfnet-relay.ac.uk .........................................................................
I326@VMT.SCP.AC.UK ("I326 at VMTEACH Jim N. Deakin") (09/11/90)
I originally posted this on August 15th, but didn't see any replies or even an echo of the note. Could someone please confirm if this makes it to the list? Thanks. I'm looking at eForth, planning to convert it for a 68000 based machine, and notice that the PC version uses separate code and name stacks. I know that F-PC uses a similar system to get round the chip's 64k segment limitations, but the eForth is contained in one segment, so I can't really see any advantage in this system. This has probably been debated here before, so I would appreciate it if somebody could explain it to me. Also, for anyone who knows, is this arrangement part of the eForth spec. ? I would rather have the word's head and body contiguous, making for a simpler memory map if it's up to the individual implementor. Thanks for any help, ......................................................................... From: Jim Deakin, | Systems Support, | This space intentionally Sheffield Polytechnic, | Computer Services, | left blank. Heriot House, | S. Yorks. | England. | ......................................................................... Email on: JANET : I326@uk.ac.scp.vmt INTERNET or UUCP : I326%vmt.scp.ac.uk@nsfnet-relay.ac.uk ......................................................................... ========================================================================