Topic : The ATARI Compendium
Author : Scott Sanders / JAY Software
Version : 1.25 (20/6/2003)
Subject : Documentation
Nodes : 1117
Index Size : 32614
HCP-Version : 6
Compiled on : Atari
@charset : UTF-8
@lang : en
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View Ref-FileST Multi-function Peripheral Port (68901) ∙The MFP is present on a Falcon,
however it is not used for serial
communications.
Location(s) SizeBYTE Occupies one byte (8 bits).
WORD Occupies one WORD (16 bits).
LONG Occupies one longword (32 bits).
OW Occupies the odd WORD of a LONG.
EW Occupies the even WORD of a LONG.
OB Occupies the odd BYTE of a WORD.
EB Occupies the even BYTE of the WORD.
MchnIf the box is shaded then address is available
for this computer.
▒ ▒ ▒ ▒ ▒ ▒
| | | | | '------- Falcon030
| | | | '--------- TT030
| | | '----------- MEGA STe
| | '------------- STe
| '--------------- MEGA ST
'----------------- STTypeROM Location is Read-Only Memory
RAM Location is Read-Write Memory
I/O Location is hardware-mapped
VME Location addresses VME address space
N/A Not applicable
RO Read-only location
WO Write-only location
RW Read-write location
RSVD Reserved
Unassigned Either not assigned or undocumented
Meaning (see Usage)
▒▒▒▒▒▒
0x00FFFA00 OB ▒▒▒▒▒▒ I/O MFP-ST General Purpose Pins (Parallel port
▒▒▒▒▒▒ data register on Atari machines)
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA02 OB ▒▒▒▒▒▒ I/O MFP-ST Active Edge Register as follows:
▒▒▒▒▒▒
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▒▒▒▒▒▒ On a Falcon030, the MFP is not actually
▒▒▒▒▒▒ used for serial communcations
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA04 OB ▒▒▒▒▒▒ I/O MFP-ST Data Direction Register
▒▒▒▒▒▒ Each bit is individually programmed
▒▒▒▒▒▒ (0 = input, 1 = output)
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA06 OB ▒▒▒▒▒▒ I/O MFP-ST Interrupt Enable Register A as
▒▒▒▒▒▒ follows:
▒▒▒▒▒▒
▒▒▒▒▒▒
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▒▒▒▒▒▒
▒▒▒▒▒▒
▒▒▒▒▒▒ On a Falcon030, the MFP is not actually
▒▒▒▒▒▒ used for serial communcations
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA08 OB ▒▒▒▒▒▒ I/O MFP-ST Interrupt Enable Register B as
▒▒▒▒▒▒ follows:
▒▒▒▒▒▒
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0x00FFFA0A OB ▒▒▒▒▒▒ I/O MFP-ST Interrupt Pending Register A (see
▒▒▒▒▒▒ mapping at 0x00FFFA06)
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA0C OB ▒▒▒▒▒▒ I/O MFP-ST Interrupt Pending Register B (see
▒▒▒▒▒▒ mapping at 0x00FFFA08)
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA0E OB ▒▒▒▒▒▒ I/O MFP-ST Interrupt In-Service Register
▒▒▒▒▒▒ A (see mapping at 0x00FFFA06)
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA10 OB ▒▒▒▒▒▒ I/O MFP-ST Interrupt In-Service Register B
▒▒▒▒▒▒ (see mapping at 0x00FFFA08)
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA12 OB ▒▒▒▒▒▒ I/O MFP-ST Interrupt Mask Register A (see
▒▒▒▒▒▒ mapping at 0x00FFFA06)
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA14 OB ▒▒▒▒▒▒ I/O MFP-ST Interrupt Mask Register B (see
▒▒▒▒▒▒ mapping at 0x00FFFA08)
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA16 OB ▒▒▒▒▒▒ I/O MFP-ST Vector Register Bit 3 is set to 1
▒▒▒▒▒▒ to indicate software End-of-Interrupt mode
▒▒▒▒▒▒ and 0 to indicate automatic
▒▒▒▒▒▒ End-of-Interrupt mode
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA18 OB ▒▒▒▒▒▒ I/O MFP-ST Timer A Control Register Interpret
▒▒▒▒▒▒ bits 3-0 as follows:
▒▒▒▒▒▒
▒▒▒▒▒▒ Value Meaning
▒▒▒▒▒▒ 0000 Timer stop
▒▒▒▒▒▒ 0001 Delay mode, divide by 4
▒▒▒▒▒▒ 0010 Delay mode, divide by 10
▒▒▒▒▒▒ 0011 Delay mode, divide by 16
▒▒▒▒▒▒ 0100 Delay mode, divide by 50
▒▒▒▒▒▒ 0101 Delay mode, divide by 64
▒▒▒▒▒▒ 0110 Delay mode, divide by 100
▒▒▒▒▒▒ 0111 Delay mode, divide by 200
▒▒▒▒▒▒ 1000 Event count mode
▒▒▒▒▒▒ 1xxx Pulse extension mode (as above)
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA1A OB ▒▒▒▒▒▒ I/O MFP-ST Timer B Control Register (see Timer
▒▒▒▒▒▒ A)
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA1C OB ▒▒▒▒▒▒ I/O MFP-ST Timer C & D Control Register
▒▒▒▒▒▒ Interpret bits 6-4 for Timer C and bits
▒▒▒▒▒▒ 2-0 for Timer D as follows:
▒▒▒▒▒▒
▒▒▒▒▒▒ Value Meaning
▒▒▒▒▒▒ 000 Timer stop
▒▒▒▒▒▒ 001 Delay mode, divide by 4
▒▒▒▒▒▒ 010 Delay mode, divide by 10
▒▒▒▒▒▒ 011 Delay mode, divide by 16
▒▒▒▒▒▒ 100 Delay mode, divide by 50
▒▒▒▒▒▒ 101 Delay mode, divide by 64
▒▒▒▒▒▒ 110 Delay mode, divide by 100
▒▒▒▒▒▒ 111 Delay mode, divide by 200
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA1E OB ▒▒▒▒▒▒ I/O MFP-ST Timer A Data Register
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA20 OB ▒▒▒▒▒▒ I/O MFP-ST Timer B Data Register
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA22 OB ▒▒▒▒▒▒ I/O MFP-ST Timer C Data Register
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA24 OB ▒▒▒▒▒▒ I/O MFP-ST Timer D Data Register
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA26 OB ▒▒▒▒▒▒ I/O MFP-STSync Character Register
▒▒▒▒▒▒
▒▒▒▒▒▒
0x00FFFA28 OB ▒▒▒▒▒▒ I/O MFP-ST USART Control Register as
▒▒▒▒▒▒ follows:
▒▒▒▒▒▒
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0x00FFFA2A OB ▒▒▒▒▒▒ I/O MFP-ST Receiver Status Register as
▒▒▒▒▒▒ follows:
▒▒▒▒▒▒
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0x00FFFA2C OB ▒▒▒▒▒▒ I/O MFP-ST Transmitter Status Register as
▒▒▒▒▒▒ follows:
▒▒▒▒▒▒