X-Git-Url: http://cloudbase.mooo.com/gitweb/avrcpm.git/blobdiff_plain/a7b795ca288038b9b99c6afe5d15cf2ddd4dac3f..825ecc9d1df4b7b39bbbcbc6461d0407dd7d9d22:/avr/config.inc diff --git a/avr/config.inc b/avr/config.inc index d947e79..0618876 100644 --- a/avr/config.inc +++ b/avr/config.inc @@ -19,47 +19,52 @@ ; along with avrcpm. If not, see . ; ; $Id$ + + +#define VMAJOR 3 /* Version number */ +#define VMINOR 2 + +;----------------------------------------------------------------------- +; +; Hardware and feature configuration ; +; Supported MCUs are: atmega328P atmega168 atmega88 atmega8 +; Z80 emulation currently needs atmega328P, so this is the default. +;#define atmega328P -#define VMAJOR 2 /* Version number */ -#define VMINOR 1 +; MCU frequency in Hz. +;#define F_CPU 20000000 -#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 1024*K +; Set this to 0, if you have a (one) DRAM chip whith 4 Bit data bus. +;#define DRAM_8BIT 1 -;#define RAMSIZE 256*K*4 /* 1 chip 256Kx4 */ -#define RAMSIZE 4*M*4 * 2 /* 2 chips 4Mx4 */ +; Baudrate of serial port (console). +;#define BAUD 115200 -#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 */ +; I2C_SUPPORT defaults to 1 on 8-bit-ram systems and must be 0 on 4-bit-ram systems. +; Set this do 0, if you don't have I2C peripherals and want to save some flash +; or use the I2C pins for other purposes. +;#define I2C_SUPPORT -#define PARTID 0x52 /* Partition table id */ - /* http://www.win.tue.nl/~aeb/partitions/partition_types-1.html */ -#define IPLADDR 0x2000 /* Bootloader load address */ +; Emulate Z80 cpu if 1, 8080 otherwise. +; +;#define EM_Z80 1 -#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 */ +; Uncomment and set RAMDISKCOUNT to 1-4 if you want to test the experimental and +; unsupported ramdisk feature . Number depends on actual ram size (256kx4 - 4Mx8) +; and bios dpb/dph definitions. +;#define RAMDISKCNT 0 +; Uncomment and set to 0, if you need to save flash (ie. ATmega88). +;#define FAT16_SUPPORT 1 +; Uncomment and set to 0, if you need to save flash. +;#define MMCBOOTLOADER 1 -#define EM_Z80 0 /* we don't have any z80 instructions yet */ + +;----------------------------------------------------------------------- +;Debugging aids .equ BOOTWAIT = 1 .equ MEMTEST = 1 @@ -75,13 +80,113 @@ .equ INS_DEBUG = 0 .equ STACK_DBG = 0 .equ PRINT_PC = 0 +.equ TIMER_DEBUG = 0 + +;----------------------------------------------------------------------- +; Z80/8080 Virtual Ports + +#define TIMERPORT 0x40 /* Base z80 port address for clock access */ +#define TIMER_CTL TIMERPORT +#define TIMER_MSECS TIMERPORT+1 +#define TIMER_SECS TIMER_MSECS+2 +#define CLOCKPORT TIMERPORT+7 /* Real time clock BCD (ss,mm,hh,DD,MM,YYYY) */ + +#define starttimercmd 1 +#define quitTimerCmd 2 +#define printTimerCmd 15 +#define uptimeCmd 16 + +#define DEBUGPORT 0x4F + +#define startTraceCmd 1 /* 'OUT (DEBUGPORT),startTraceCmd' starts tracing */ +#define stopTraceCmd 0 + +; Virtual I2C Interface +#define I2CSTAT 0x05 +#define I2CCTRL 0x05 +#define I2CBLEN 0x06 +#define I2CADR 0x07 +#define I2CADRL 0x07 +#define I2CADRH 0x08 + +; Simple ADC Interface +#define ADC80 0x17 +#define ADC81 0x18 + +; Port-Expander PCF8574 +#define PORT 0x80 +#define PORT0 0x80 +#define PORT1 0x81 +#define PORT2 0x82 +#define PORT3 0x83 +#define PORT4 0x84 +#define PORT5 0x85 +#define PORT6 0x86 +#define PORT7 0x87 + +;----------------------------------------------------------------------- +; + +#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 32 /* USART transmit buffer size. Must be power of 2 */ + +#define I2C_CLOCK 100000 /* 100kHz */ +#define I2C_BUFSIZE 17 /* largest message size including address byte (SLA) */ + #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 MEMFILL_VAL 0x76 /* Fill ram with HALT opcode. */ #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. */ +#ifndef DRAM_8BIT + #define DRAM_8BIT 1 /* 1 = 8bit wide data bus to DRAM (ie two 4-bit Chips)*/ +#endif /* 0 = only one 4 bit wide DRAM chip */ +#ifndef F_CPU + #define F_CPU 20000000 /* system clock in Hz; defaults to 20MHz */ +#endif +#ifndef BAUD + #define BAUD 115200 /* console baud rate */ +#endif +#ifndef I2C_SUPPORT + #define I2C_SUPPORT DRAM_8BIT /* I2C requires 8 bit DRAM */ +#endif +#if I2C_SUPPORT && !DRAM_8BIT + #error "I2C_SUPPORT requires 8 bit DRAM (DRAM_8BIT=1)!" +#endif +#ifndef ADC_SUPPORT + #define ADC_SUPPORT 0 +#endif + +#ifndef EM_Z80 + #define EM_Z80 1 /* Emulate Z80 if true, else 8080 */ +#endif +#ifndef FAT16_SUPPORT + #define FAT16_SUPPORT 1 /* Include Support for FAT16 Partitions */ +#endif /* which may contain CP/M image files. */ +#ifndef RAMDISKCNT + #define RAMDISKCNT 0 /* Number of RAM disks */ +#endif +#define RAMDISKNR 'I'-'A' /* Drive "letter" for first RAM disk */ + +/* MMC/SD Bootloader support. */ +#define BOOTLDRSIZE 2048 /* Bytes needed for Bootloader (1024 Words Bootsection Size) */ +#define DEVID_S "ACPM" +#ifndef MMCBOOTLOADER + #define MMCBOOTLOADER 1 +#endif +#ifndef TESTVERSION + #define TESTVERSION 0 +#endif + ;----------------------------------------------------------------------- ; Port declarations @@ -120,6 +225,7 @@ .equ P_MMC_CS = PORTB .equ P_A8 = PORTB .equ P_RXD = PORTB +.equ P_TXD = PORTB ;Port C .equ RAM_RAS = 0 @@ -202,24 +308,22 @@ .def _WE = r5 .def _255 = r6 .def _0 = r7 -.def z_a = r9 -;.def stx_bitcount = r9 -;.def stx_dr = r10 -.def srx_lastedgel = r10 -.def srx_lastedgeh = r11 - -.def insstore= r8 ; -;.def insop = r13 ; -.def insdecl = r12 ; -.def insdech = r13 ; -.def z_spl = r14 + +.def z_c = r8 ; +.def z_b = r9 ; +.def z_e = r10 ; +.def z_d = r11 ; +.def z_l = r12 ; +.def z_h = r13 ; +.def z_spl = r14 ; .def z_sph = r15 ; .def temp = r16 ; .def temp2 = r17 ; -.def temp3 = r18 -.def temp4 = r19 +.def temp3 = r18 ; +;.def temp4 = r19 ; +.def intstat = r19 ;interpreter status / interrupt status .def z_flags = r20 ; - ; +.def z_a = r21 ; .def opl = r22 ; .def oph = r23 ; .def z_pcl = r24 ; @@ -228,36 +332,49 @@ ; xh ;r27 ; yl ;r28 ; yh ;r29 -; zl ;r30 ; -; zh ;r31 ; +; zl ;r30 +; zh ;r31 +.equ i_break = 0 ;break detected flag +.equ i_trace = 1 ;cpu interpreter trace flag +.equ i_halt = 2 ;executing halt instruction #if defined __ATmega8__ -.equ flags = TWBR -.equ P_PUD = SFIOR -#else -.equ flags = GPIOR0 -.equ P_PUD = MCUCR -#endif + #if DRAM_8BIT + + .equ flags = UBRRL ;UART is unused with 8-Bit RAM + #else + .equ flags = TWBR ;TWI is unused with 4-Bit RAM + #endif + .equ P_PUD = SFIOR + +#else + + .equ flags = GPIOR0 + .equ P_PUD = MCUCR + +#endif /* __ATmega8__ */ ; Flags: .equ hostact = 7 ;host active flag .equ hostwrt = 6 ;host written flag .equ rsflag = 5 ;read sector flag .equ readop = 4 ;1 if read operation - .equ trace = 0 -; This is the base z80 port address for clock access -#define TIMERPORT 0x40 -#define TIMER_CTL TIMERPORT -#define TIMER_MSECS TIMERPORT+1 -#define TIMER_SECS TIMER_MSECS+2 + .equ prefixfd = 1 ;Opcode prefix DD=0, FD=1 -#define starttimercmd 1 -#define quitTimerCmd 2 -#define printTimerCmd 15 -#define uptimeCmd 16 + +#if EM_Z80 + #define CPUSTR "Z80" +#else + #define CPUSTR "8080" +#endif +#if TESTVERSION + #define TESTSTR "Test" +#else + #define TESTSTR "" +#endif #if defined __ATmega8__ .equ RXTXDR0 = UDR @@ -288,4 +405,3 @@ ; vim:set ts=8 noet nowrap -