; Configuration, hardware definition, ...
;
; Copyright (C) 2010 Sprite_tm
; Copyright (C) 2010 Leo C.
;
; This file is part of avrcpm.
;
; avrcpm is free software: you can redistribute it and/or modify it
; under the terms of the GNU General Public License as published by
; the Free Software Foundation, either version 3 of the License, or
; (at your option) any later version.
;
; avrcpm is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with avrcpm. If not, see .
;
; $Id$
;
#define VMAJOR 2 /* Version number */
#define VMINOR 0
#ifndef DRAM_8BIT
#define DRAM_8BIT 1 /* 1 = 8bit wide DRAM */
#endif
#ifndef F_CPU
#define F_CPU 20000000 /* system clock in Hz; defaults to 20MHz */
#endif
#ifndef BAUD
#define BAUD 38400 /* console baud rate */
#endif
#define K 1024
#define M 1204*K
;#define RAMSIZE 256*K*4 /* 1 chip 256Kx4 */
#define RAMSIZE 4*M*4 * 2 /* 2 chips 4Mx4 */
#ifndef FAT16_SUPPORT
#define FAT16_SUPPORT 1 /* Include Support for FAT16 Partitions */
#endif /* which may contain CP/M image files. */
#define RAMDISKCNT 0 /* Number of RAM disks */
#define RAMDISKNR 'I'-'A' /* Drive "letter" for first RAM disk */
#define PARTID 0x52 /* Partition table id */
/* http://www.win.tue.nl/~aeb/partitions/partition_types-1.html */
#define IPLADDR 0x2000 /* Bootloader load address */
#define DRAM_WAITSTATES 1 /* Number of additional clock cycles for dram read access */
#define REFR_RATE 64000 /* dram refresh rate in cycles/s. */
/* Most drams need 1/15.6µs. */
#define RXBUFSIZE 128 /* USART recieve buffer size. Must be power of 2 */
#define TXBUFSIZE 128 /* USART transmit buffer size. Must be power of 2 */
#define EM_Z80 0 /* we don't have any z80 instructions yet */
.equ BOOT_DEBUG = 0
.equ MMC_DEBUG = 0 /* Increase for more debugging */
.equ FAT16_DEBUG = 1
.equ FAT16_RWDEBUG = 0
.equ FAT16_DBG_FAT = 1
.equ INS_DEBUG = 0
.equ MEMTEST = 1
.equ BOOTWAIT = 1
.equ PORT_DEBUG = 0
.equ DISK_DEBUG = 0 /* Increase for more debugging */
.equ HOSTRW_DEBUG= 0
.equ MEMFILL = 1
.equ STACK_DBG = 0
.equ PRINT_PC = 0
.equ HEAP_DEBUG = 1
#define MMC_SPI2X 1 /* 0 = SPI CLK/4, 1 = SPI CLK/2 */
#define MEMFILL_VAL 0xCB /* Fill ram with cbs, which will trigger an invalid opcode error. */
#define DBG_TRACE_BOTTOM 0x01 /* Page boundaries for INS_DEBUG and PRINT_PC */
#define DBG_TRACE_TOP 0xdc /* Trace is off, below bottom page and above top page. */
;-----------------------------------------------------------------------
; Port declarations
#if DRAM_8BIT /* Implies software uart */
;Port D
.equ RAM_D0 = 0
.equ RAM_D1 = 1
.equ RAM_D2 = 2
.equ RAM_D3 = 3
.equ RAM_D4 = 4
.equ RAM_D5 = 5
.equ RAM_D6 = 6
.equ RAM_D7 = 7
.equ RAM_A0 = 0
.equ RAM_A1 = 1
.equ RAM_A2 = 2
.equ RAM_A3 = 3
.equ RAM_A4 = 4
.equ RAM_A5 = 5
.equ RAM_A6 = 6
.equ RAM_A7 = 7
;Port B
.equ MMC_MOSI = 3
.equ MMC_MISO = 4
.equ MMC_SCK = 5
.equ RAM_A8 = 3
.equ RAM_A9 = 4
.equ RAM_A10 = 5
.equ RXD = 0
.equ TXD = 1
.equ MMC_CS = 2
.equ P_MMC_CS = PORTB
.equ P_A8 = PORTB
.equ P_RXD = PORTB
;Port C
.equ RAM_RAS = 0
.equ RAM_CAS = 1
.equ RAM_OE = 2
.equ RAM_W = 3
.equ P_RAS = PORTC
.equ P_CAS = PORTC
.equ P_OE = PORTC
.equ P_W = PORTC
#else /* 4 bit RAM, hardware uart */
; Port D
.equ RXD = 0
.equ TXD = 1
.equ RAM_OE = 2
.equ RAM_A8 = 3
.equ MMC_CS = 4
.equ RAM_A5 = 5
.equ RAM_A6 = 6
.equ RAM_A7 = 7
.equ P_RXD = PORTD
.equ P_OE = PORTD
.equ P_A8 = PORTD
.equ P_MMC_CS = PORTD
.equ P_AH = PORTD
; RAM_A[7..5]
.equ RAM_AH_MASK = (1<