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Digital Research
This commit is contained in:
Sepp J Morris
2020-11-06 18:50:37 +01:00
parent 621ed8ccaf
commit 31738079c4
8481 changed files with 1888323 additions and 0 deletions
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20
CPM OPERATING SYSTEMS/CPM 86/CONCURRENT/CCPM-86 & CPM-86 SOURCES/ASM/BNF.TEX Normal file
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/*********** "BNF"-expression syntax ************/
/*
E::= E xor A !! E or A !! A
A::= A and N !! N
N::= not N !! R
R::= P eq P !! P lt P !! P le P !! P gt P !! P ge P !! P ne P !! P
P::= P + T !! P - T !! T
T::= T * M !! T / M !! T mod M !! T shl M !! T shr M !! M
M::= - M !! + M !! S
S::= <over>: F !! F
F::= F ptr B !! seg B !! offset B !! type B !!
length B !! last B !! B
B::= ( E ) !! [ bracket-expression ] !! I
I::= varaible !! . number !! number !! label !! string
<over>::= segment register
(stringlength < 3)
*/