One of the criteria that you should use is that the pure assembly implementation should not exceed in size to the VM assembly implementation +10% (let's give a margin, ok?) Speed, yes but not sacrifying compactness Rafael
________________________________ De: Enoch <i...@hotmail.com> Para: amforth-devel@lists.sourceforge.net Enviado: Jueves 6 de junio de 2013 21:37 Asunto: [Amforth] Waking up a dormant forum :-) Hello AmForth-ers, Can somebody give me good reasons why we should not convert words/*.asm implementations (as much as possible) from VM assembly to AVR assembly. For example: ; ( a-addr1 -- a-addr2 ) ; Arithmetics ; add the size of an address-unit to a-addr1 VE_CELLPLUS: .dw $ff05 .db "cell+",0 .dw VE_HEAD .set VE_HEAD = VE_CELLPLUS Current implementation: ======================= XT_CELLPLUS: .dw DO_COLON PFA_CELLPLUS: .if CELLSIZE == 2 ; .dw XT_1PLUS .dw XT_1PLUS .else .dw XT_DOLITERAL .dw CELLSIZE .dw XT_PLUS .endif .dw XT_EXIT Suggested implementation: ========================= XT_CELLPLUS: .dw pc + 1 adiw tosl, CELLSIZE jmp_ DO_NEXT There are two good reasons to prefer the AVR implementation: 1. Speed (10x faster?) 2. Ease of debugging through the Studio. Comments? [flames :-)] Thanks, Enoch. ------------------------------------------------------------------------------ How ServiceNow helps IT people transform IT departments: 1. A cloud service to automate IT design, transition and operations 2. Dashboards that offer high-level views of enterprise services 3. A single system of record for all IT processes http://p.sf.net/sfu/servicenow-d2d-j _______________________________________________ Amforth-devel mailing list for http://amforth.sf.net/ Amforth-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amforth-devel ------------------------------------------------------------------------------ How ServiceNow helps IT people transform IT departments: 1. A cloud service to automate IT design, transition and operations 2. Dashboards that offer high-level views of enterprise services 3. A single system of record for all IT processes http://p.sf.net/sfu/servicenow-d2d-j _______________________________________________ Amforth-devel mailing list for http://amforth.sf.net/ Amforth-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amforth-devel
