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tom.txt
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1996-01-28
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# -------------------------------------------------------------------
# TOM (c) Copyright 1996 Nat! & KKP
# -------------------------------------------------------------------
# These are some of the results/guesses that Klaus and Nat! found
# out about the Jaguar with a few helpful hints by other people,
# who'd prefer to remain anonymous.
#
# Since we are not under NDA or anything from Atari we feel free to
# give this to you for educational purposes only.
#
# Please note, that this is not official documentation from Atari
# or derived work thereof (both of us have never seen the Atari docs)
# and Atari isn't connected with this in any way.
#
# Please use this informationphile as a starting point for your own
# exploration and not as a reference. If you find anything innacurate,
# missing, needing more explanation etc. by all means please write
# to us:
# nat@zumdick.rhein-main.de
# or
# kkp@gamma.dou.dk
#
# If you could do us a small favor, don't use this information for
# those lame flamewars on r.g.v.a or the mailing list.
#
# HTML soon ?
# -------------------------------------------------------------------
# $Id: tom.txt,v 1.2 1996/01/28 20:35:58 nat Exp $
# -------------------------------------------------------------------
Here are the leftovers of TOM that aren't described in the OP, Blitter
or RISC dox.
INTERRUPT CONTROL:
=================
INT1:
=-=-=
16 12 8 4 0
+---------^---------+---------^---------+
| latches | enable |
+-------------------+-------------------+
15...8 7...0
enable:
bit 0: LEVEL 0 IRQ enable (VBLANK)
bit 1: LEVEL 1 IRQ enable
bit 2: LEVEL 2 IRQ enable
bit 3: LEVEL 3 IRQ enable
bit 4: LEVEL 4 IRQ enable
bit 5: unused
bit 6: unused
Enable by setting the bit
latches:
bit 8: LEVEL 0 IRQ enable (VBLANK)
bit 9: LEVEL 1 IRQ enable
bit10: LEVEL 2 IRQ enable
bit11: LEVEL 3 IRQ enable
bit12: LEVEL 4 IRQ enable
bit13: unused
bit14: unused
Clear the latch by setting the appropriate bit.