LTC1407/LTC1407A
19
1407fb
APPLICATIONS INFORMATION
; ———————mask and shift input data ——————————————
bufull:
b = *ar3+ << -0 ; load acc b with BSP buffer and shift right -0
b = #07FFFh & b ; mask out the TRISTATE bits with #03FFFh
;
*ar2+ = data(#0bh) ; store B to out buffer and advance AR2 pointer
TC = (@ar2 == #02000h) ; output buffer is 2k starting at 1800h
if (TC) goto start ; restart if out buffer is at 1fffh
goto bufull
; —————————dummy bsend return————————————
bsend return_enable ;this is also a dummy return to defi ne bsend
;in vector table fi le BVECTORS.ASM
; ——————————— end ISR ——————————————
.copy “c:\dskplus\1407A\s2k14ini.asm” ;initialize buffered serial port
.space 16*32 ;clear a chunk at the end to mark the end
;======================================================================
;
; VECTORS
;
;======================================================================
.sect “vectors” ;The vectors start here
.copy “c:\dskplus\1407A\bvectors.asm” ;get BSP vectors
.sect “buffer” ;Set address of BSP buffer for clearing
.space 16*0x800
.sect “result” ;Set address of result for clearing
.space 16*0x800
.end
; ***************************************************************************
; File: BVECTORS.ASM -> Vector Table for the ‘C54x DSKplus 10.Jul.96
; BSP vectors and Debugger vectors
; TDM vectors just return
; ***************************************************************************
; The vectors in this table can be confi gured for processing external and
; internal software interrupts. The DSKplus debugger uses four interrupt
; vectors. These are RESET, TRAP2, INT2, and HPIINT.
; * DO NOT MODIFY THESE FOUR VECTORS IF YOU PLAN TO USE THE DEBUGGER *
;
; All other vector locations are free to use. When programming always be sure
; the HPIINT bit is unmasked (IMR=200h) to allow the communications kernel and
; host PC interact. INT2 should normally be masked (IMR(bit 2) = 0) so that the
; DSP will not interrupt itself during a HINT. HINT is tied to INT2 externally.
;
;
;
