formfast: Added Support for Titan Accelerator IIe (#774)

I happen to own this card, and it was missing from the DA, so this small patch adds support for it. I don't think it can interfere with anything, as it's using a write on an otherwise read-only address ($c086) Thank you for the amazing work on this great project! Signed-off-by: Michel Pollet <[email protected]>
a2stuff · Oct 20, 2023 · 107fc99 · 107fc99
1 parent c497598
commit 107fc99
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/lib/normfast.s b/lib/normfast.s
@@ -119,6 +119,13 @@ fc_speed        :=      $C06D
 FC_1MHZ         =       9
 FC_ON           =       40      ; doco says 16.6Mhz
 
+;;; Titan Accelerator IIe
+;;; This overlaps BSR address, but BSR is read-only so OK
+ta_speed       :=      $C086
+TA_1MHZ        =       1
+TA_MAX         =       5
+;TA_LOCK       =       $a
+
 ;;; TransWarp I
 ;;; may overlap with paddle trigger
 tw1_speed       :=      $C074
@@ -269,6 +276,16 @@ addon:
 
         sta     tw1_speed
 
+        ; Titan Accelerator IIe
+
+        pha
+        eor     #0
+        bne     taset
+        lda     #TA_MAX
+taset:
+        sta     ta_speed
+        pla
+
         ; Zip Chip
 
         tay