; outsw.asm - just does an outsw with Watcom register conventions
;
; all parameters are passed in registers
; eax = pointer to data
; edx = link adapter output data port
; ebx = no of bytes to send
;
; assumes the calling C code has fired the first 3 bytes of the protocol
; word at the link adapter, and has spun waiting for the c012 to be ready
; so if we disable interrupts, we execute very rapidly the output followed
; by the string output. The tranny will unfortunately have to spin on the
; fifo flag

	assume  cs:_text

_text   segment para public use32 'code'

	public  _outsw_

_outsw_ proc

	mov     esi,eax                 ; save away for pump
	mov     ecx,ebx
	mov     al, 0x40                ; the 'use fifo' tag
	cli                             ; dont let us be interrupted in here
	out     dx,al                   ; send last byte of message
	add     dx, 0x3                 ; point at fifo read/write port
	rep     outsw                   ; pump up the jam
	sti                             ; and restore
	ret                             ; return to caller

_outsw_ endp

_text   ends

	end _outsw_