Removed IRQ support from TGI drivers.

[cc65] / libsrc / tgi / tgi-kernel.s

diff --git a/libsrc/tgi/tgi-kernel.s b/libsrc/tgi/tgi-kernel.s
index ed65760af183bc08fb3ffa5394f554080f3cd9a5..3a388b6dc83f7794db512a41e46d47713b9de999 100644 (file)
--- a/libsrc/tgi/tgi-kernel.s
+++ b/libsrc/tgi/tgi-kernel.s
@@ -6,7 +6,6 @@
 
         .import         tgi_libref
         .importzp       ptr1
-        .interruptor    tgi_irq         ; Export as IRQ handler
 
         .include        "tgi-kernel.inc"
         .include        "tgi-error.inc"
@@ -81,7 +80,6 @@ tgi_line:           jmp     $0000
 tgi_bar:            jmp     $0000
 tgi_textstyle:      jmp     $0000
 tgi_outtext:        jmp     $0000
-tgi_irq:            .byte   $60, $00, $00       ; RTS plus two dummy bytes
 
 ; Driver header signature
 .rodata
@@ -144,20 +142,13 @@ _tgi_install:
         dex
         bpl     @L3
 
-; Install the IRQ vector if the driver needs it.
-
-        lda     tgi_irq+2               ; Check high byte of IRQ vector
-        beq     @L4                     ; Jump if vector invalid
-        lda     #$4C                    ; Jump opcode
-        sta     tgi_irq                 ; Activate IRQ routine
-
 ; Initialize some other variables
 
         lda     #$00
-@L4:    ldx     #csize-1
-@L5:    sta     cstart,x                ; Clear error/mode/curx/cury/...
+        ldx     #csize-1
+@L4:    sta     cstart,x                ; Clear error/mode/curx/cury/...
         dex
-        bpl     @L5
+        bpl     @L4
 
         rts
 
@@ -206,9 +197,6 @@ _tgi_uninstall:
 
         jsr     tgi_uninstall           ; Allow the driver to clean up
 
-        lda     #$60                    ; RTS opcode
-        sta     tgi_irq                 ; Disable IRQ entry point
-
 ; Clear driver pointer and error code
 
 tgi_clear_ptr: