kvisc/ka/crt/sys.k

; The OS/K Team licenses this file to you under the MIT license.
; See the LICENSE file in the project root for more information.

;
; EXIT syscall
;
; Return to COMMAND.COM
;
Sys.Exit := 0x00

;
; SHUTDOWN syscall
;
; End virtual machine
;
Sys.Shutdown := 0x01

; FIND syscalls
;
; Find file on disk
;
; IN
;   ax0 = address of name buffer
;   ax1 = size of name buffer
;
; OUT
;   rax = # of bytes written in name buffer
;   rdx = size of file
;
;
Sys.FindFirst := 0x20
Sys.FindNext := 0x21

;
; OPEN/CREATE syscalls
;
; IN
;   ax0 = name string
;
; OUT
;   rax = handle of file, or <0 if couldn't open
;
Sys.OpenFile := 0x30
Sys.CreateFile := 0x31

;
; CLOSE syscall
;
; IN
;   ax0 = file handle
;
Sys.CloseFile := 0x35

;
; READ syscall
;
; IN
;   ax0 = file handle
;   ax1 = buffer address
;   ax2 = buffer size
;
; OUT
;   rax = number of bytes read, <0 on error
;
Sys.ReadFile := 0x38

; Halt mode
Sys.EnterHaltMode := 0x999