154 lines
5.9 KiB
C
154 lines
5.9 KiB
C
/*
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* io.h
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*
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* This file is part of Emu48
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*
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* Copyright (C) 1999 Christoph Gießelink
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*
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*/
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// I/O addresses without mapping offset
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#define BITOFFSET 0x00 // Display bit offset and DON
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#define CRC 0x04 // Crc (16 bit, LSB first)
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#define LPD 0x08 // Low Power Detection
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#define LPE 0x09 // Low Power detection Enable
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#define ANNCTRL 0x0b // Annunciator Control (2 nibble)
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#define BAUD 0x0d // Baudrate (Bit 2-0)
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#define CARDCTL 0x0e // card control
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#define CARDSTAT 0x0f // card status
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#define IOC 0x10 // IO CONTROL
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#define RCS 0x11 // RCS
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#define TCS 0x12 // TCS
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#define CRER 0x13 // CRER
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#define RBR_LSB 0x14 // RBR low nibble
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#define RBR_MSB 0x15 // RBR high nibble
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#define TBR_LSB 0x16 // TBR low nibble
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#define TBR_MSB 0x17 // TBR high nibble
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#define SRQ1 0x18 // SRQ1
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#define SRQ2 0x19 // SRQ2
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#define IR_CTRL 0x1a // IR CONTROL
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#define LCR 0x1c // Led Control Register
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#define LBR 0x1d // Led Buffer Register
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#define DISP1CTL 0x20 // Display Start Address
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#define LINENIBS 0x25 // Display Line Offset
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#define LINECOUNT 0x28 // Display Line Counter
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#define TIMER1_CTRL 0x2e // Timer1 Control
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#define TIMER2_CTRL 0x2f // Timer2 Control
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#define DISP2CTL 0x30 // Display Secondary Start Address
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#define TIMER1 0x37 // Timer1 (4 bit)
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#define TIMER2 0x38 // Timer2 (32 bit, LSB first)
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// 0x00 Display bit offset and DON [DON OFF2 OFF1 OFF0]
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#define DON 0x08 // Display On
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#define OFF2 0x04 // Display OFFset Bit2
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#define OFF1 0x02 // Display OFFset Bit1
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#define OFF0 0x01 // Display OFFset Bit0
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// 0x08 Low Power Detection [LB2 LB1 LB0 VLBI]
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#define LB2 0x08 // Low Battery indicator memory port 2
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#define LB1 0x04 // Low Battery indicator memory port 1
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#define LB0 0x02 // Low Battery indicator system battery
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#define VLBI 0x01 // Very Low Battery Indicator
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// 0x09 Low Power detection Enable [ELBI EVLBI GRAM RST]
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#define ELBI 0x08 // Enable Low Battery Indicator
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#define EVLBI 0x04 // Enable Very Low Battery Indicator
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#define GRAM 0x02 // Glitch sensitive RAM
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#define RST 0x01 // ReSeT
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// 0x0b Annunciator Control [AON XTRA LA6 LA5] [LA4 LA3 LA2 LA1]
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#define AON 0x80 // Annunciators on
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#define LXTRA 0x40 // does nothing
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#define LA6 0x20 // LA6 - Transmitting
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#define LA5 0x10 // LA5 - Busy
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#define LA4 0x08 // LA4 - Alert
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#define LA3 0x04 // LA3 - Alpha
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#define LA2 0x02 // LA2 - ALT Shift
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#define LA1 0x01 // LA1 - Shift
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// 0x0d SERIAL Baud Rate [UCK BD2 BD1 BD0]
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#define UCK 0x08 // Uart ClocK
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#define BD2 0x04 // BauDrate Bit2
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#define BD1 0x02 // BauDrate Bit1
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#define BD0 0x01 // BauDrate Bit0
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// 0x0e Card Control [ECDT RCDT SMP SWINT]
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#define ECDT 0x08 // Enable Card Detect
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#define RCDT 0x04 // Run Card Detect
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#define SMP 0x02 // Set module pulled
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#define SWINT 0x01 // Software Interrupt
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// 0x0f Card Status [P2W P1W P2C P1C]
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#define P2W 0x08 // High when Port2 writeable
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#define P1W 0x04 // High when Port1 writeable
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#define P2C 0x02 // High when Card in Port2 inserted
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#define P1C 0x01 // High when Card in Port1 inserted
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// 0x10 Serial I/O Control [SON ETBE ERBF ERBZ]
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#define SON 0x08 // Serial on
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#define ETBE 0x04 // Interrupt on transmit buffer empty
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#define ERBF 0x02 // Interrupt on receive buffer full
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#define ERBZ 0x01 // Interrupt on receiver busy
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// 0x11 Serial Receive Control/Status [RX RER RBZ RBF]
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#define RX 0x08 // Rx pin state (read-only)
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#define RER 0x04 // Receiver error
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#define RBZ 0x02 // Receiver busy
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#define RBF 0x01 // Receive buffer full
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// 0x12 Serial Transmit Control/Status [BRK LPB TBZ TBF]
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#define BRK 0x08 // Break
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#define LPB 0x04 // Loopback
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#define TBZ 0x02 // Transmitter busy
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#define TBF 0x01 // Transmit buffer full
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// 0x18 Service Request Register 1 [ISRQ TSRQ USRQ VSRQ]
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#define ISRQ 0x08 // IR receiver pulls NINT2
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#define TSRQ 0x04 // Timer pulls NINT2
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#define USRQ 0x02 // UART pulls NINT2
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#define VSRQ 0x01 // VLBI pulls NINT2
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// 0x19 Service Request Register 2 [KDN NINT2 NINT LSRQ]
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#define KDN 0x08 // Bit set when ON Key or Key Interrupt
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#define NINT2 0x04 // State of NINT2
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#define NINT 0x02 // State of NINT
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#define LSRQ 0x01 // LED driver pulls NINT2
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// 0x1a IR Control Register [IRI EIRU EIRI IRE]
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#define IRI 0x08 // IR input (read-only)
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#define EIRU 0x04 // Enable IR UART mode
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#define EIRI 0x02 // Enable IR interrupt
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#define IRE 0x01 // IR event
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// 0x1c Led Control Register [LED ELBE LBZ LBF]
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#define LED 0x08 // Turn on LED
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#define ELBE 0x04 // Enable Interrupt on Led Buffer empty
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#define LBZ 0x02 // Led Port Busy
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#define LBF 0x01 // Led Buffer Full
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// 0x1d Led Buffer Register [0 0 0 LBO] (bits 1-3 read zero)
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#define LBO 0x01
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// 0x28 Display Line Counter LSB [LC3 LC2 LC1 LC0]
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#define LC3 0x08 // LC3 - Line Counter Bit3
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#define LC2 0x04 // LC2 - Line Counter Bit2
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#define LC1 0x02 // LC1 - Line Counter Bit1
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#define LC0 0x01 // LC0 - Line Counter Bit0
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// 0x29 Display Line Counter MSB [DA19 M32 LC5 LC4]
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#define DA19 0x08 // Drive A[19]
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#define M32 0x04 // Multiplex 32 way
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#define LC5 0x02 // LC5 - Line Counter Bit5
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#define LC4 0x01 // LC4 - Line Counter Bit4
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// 0x2e Timer1 Control [SRQ WKE INT XTRA]
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#define SRQ 0x08 // Service request
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#define WKE 0x04 // Wake up
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#define INTR 0x02 // Interrupt
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#define XTRA 0x01 // Extra function
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// 0x2f Timer2 Control [SRQ WKE INT RUN]
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#define SRQ 0x08 // Service request
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#define WKE 0x04 // Wake up
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#define INTR 0x02 // Interrupt
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#define RUN 0x01 // Timer run
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