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Russell-S-Harper 2021-02-26 07:15:23 -05:00
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1 changed files with 14 additions and 6 deletions
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common/common.h
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@ -6,15 +6,23 @@
; to be able to recognize an overflow/underflow situation, rescale the arguments, and repeat the ; to be able to recognize an overflow/underflow situation, rescale the arguments, and repeat the
; calculation. ; calculation.
; Largest value: $3fffffff or +1048575.999(5) ; Largest value: +1048575.999(5) internally $3fffffff
; Plus one: $00000400 ; Smallest value: -1048576.000(0) internally $c0000000
; Zero: $00000000 ; Plus one: +1 internally $00000400
; Minus one: $fffffc00 ; Zero: 0 internally $00000000
; Smallest value: $c0000000 or -1048576.000(0) ; Minus one: -1 internally $fffffc00
;
; Literals can be in bases 10, 16, 8, or 2, with $, &, and % as prefixes for bases 16, 8, and 2
; respectively. Some examples, all representing the same value:
;
; DEC: 1000.25
; HEX: $3E8.40
; OCT: &1750.20
; BIN: %1111101000.01
; Instructions ; Instructions
; SET r aabbcc.dd 1r dd cc bb aa Rr <- aabbccdd - set register ; SET r aabbccdd 1r dd cc bb aa Rr <- aabbccdd - set register
; LDD r xxyy 2r yy xx Rr <- (xxyy) - load register directly from address ; LDD r xxyy 2r yy xx Rr <- (xxyy) - load register directly from address
; SVD r xxyy 3r yy xx (xxyy) <- Rr - save register directly to address ; SVD r xxyy 3r yy xx (xxyy) <- Rr - save register directly to address
; PSH r 4r RS <- Rr - push onto stack ; PSH r 4r RS <- Rr - push onto stack