.include "hw-uart.asm"
.include "dram-4bit.asm"
#endif
+ .include "dram-refresh.asm"
+ .include "timer.asm"
+ .include "utils.asm"
; .include "heap.asm"
- .include "remainders.asm"
; >>>-------------------------------------- Virtual Devices
.include "virt_ports.asm" ; Virtual Ports for BIOS
--- /dev/null
+; DRAM refresh
+;
+; 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 <http://www.gnu.org/licenses/>.
+;
+; $Id: remainders.asm 108 2010-10-01 09:34:19Z leo $
+;
+
+
+; ------------------- DRAM Refresh Interrupt --------------------
+
+ .cseg
+
+ INTERRUPT OC2Aaddr
+
+ sbis P_RAS,ram_ras ;2
+ reti
+ ; CAS RAS
+ cbi P_CAS,ram_cas ;2 1| 1|
+ ; 1| 1|
+ cbi P_RAS,ram_ras ;2 |0 1|
+ ; |0 1|
+ nop ;1 |0 |0
+; nop ;1 |0 |0
+ sbi P_RAS,ram_ras ;2 |0 |0
+ ; |0 |0
+ dram_wait DRAM_WAITSTATES-1 ; | |
+; nop ;1 |0 |0
+ cbi P_RAS,ram_ras ;2 |0 1|
+ ; |0 1|
+ sbi P_CAS,ram_cas ;2 |0 |0
+ ; |0 |0
+ sbi P_RAS,ram_ras ;2 1| |0
+ ; 1| 1|
+ reti ;4 --> 21 cycles
+
+
+; vim:set ts=8 noet nowrap
+
-; Various functions: init, (RAM) disk, mmc, timer
-; This file needs to get split up.
+; Timer module
;
-; Copyright (C) 2010 Sprite_tm
; Copyright (C) 2010 Leo C.
;
; This file is part of avrcpm.
; You should have received a copy of the GNU General Public License
; along with avrcpm. If not, see <http://www.gnu.org/licenses/>.
;
-; $Id$
+; $Id: remainders.asm 108 2010-10-01 09:34:19Z leo $
;
-
-; ------------------- DRAM Refresh Interrupt --------------------
-
- .cseg
-
-; Refresh interupt; exec 2 cbr cycles
-
- INTERRUPT OC2Aaddr
-
- sbis P_RAS,ram_ras ;2
- reti
- ; CAS RAS
- cbi P_CAS,ram_cas ;2 1| 1|
- ; 1| 1|
- cbi P_RAS,ram_ras ;2 |0 1|
- ; |0 1|
- nop ;1 |0 |0
-; nop ;1 |0 |0
- sbi P_RAS,ram_ras ;2 |0 |0
- ; |0 |0
- dram_wait DRAM_WAITSTATES-1 ; | |
-; nop ;1 |0 |0
- cbi P_RAS,ram_ras ;2 |0 1|
- ; |0 1|
- sbi P_CAS,ram_cas ;2 |0 |0
- ; |0 |0
- sbi P_RAS,ram_ras ;2 1| |0
- ; 1| 1|
- reti ;4 --> 21 cycles
-
-
-
-
-;Print a unsigned lonng value to the uart
-; temp4:temp3:temp2:temp = value
-
-print_ultoa:
- push yh
- push yl
- push z_flags
- push temp4
- push temp3
- push temp2
- push temp
-
- clr yl ;yl = stack level
-
-ultoa1: ldi z_flags, 32 ;yh = temp4:temp % 10
- clr yh ;temp4:temp /= 10
-ultoa2: lsl temp
- rol temp2
- rol temp3
- rol temp4
- rol yh
- cpi yh,10
- brcs ultoa3
- subi yh,10
- inc temp
-ultoa3: dec z_flags
- brne ultoa2
- cpi yh, 10 ;yh is a numeral digit '0'-'9'
- subi yh, -'0'
- push yh ;Stack it
- inc yl
- cp temp,_0 ;Repeat until temp4:temp gets zero
- cpc temp2,_0
- cpc temp3,_0
- cpc temp4,_0
- brne ultoa1
-
- ldi temp, '0'
-ultoa5: cpi yl,3 ; at least 3 digits (ms)
- brge ultoa6
- push temp
- inc yl
- rjmp ultoa5
-
-ultoa6: pop temp ;Flush stacked digits
- rcall uartputc
- dec yl
- brne ultoa6
-
- pop temp
- pop temp2
- pop temp3
- pop temp4
- pop z_flags
- pop yl
- pop yh
- ret
-
-
-;Prints temp2:temp in hex to the uart
-printhexw:
- push temp
- mov temp,temp2
- rcall printhex
- pop temp
- ;fall thru
-
-;Prints temp in hex to the uart
-printhex:
- swap temp
- rcall printhexn
- swap temp
- ;fall thru
-
-;Prints the lower nibble
-printhexn:
- push temp
- andi temp,0xf
- cpi temp,0xA
- brlo printhexn_isno
- subi temp,-7
-printhexn_isno:
- subi temp,-'0'
- rcall uartputc
- pop temp
- ret
-
-;Prints the zero-terminated string following the call statement.
-
-printstr:
- push zh
- push zl
- push yh
- push yl
- push temp
- in yh,sph
- in yl,spl
- ldd zl,y+7
- ldd zh,y+6
-
- lsl zl
- rol zh
-printstr_loop:
- lpm temp,z+
- cpi temp,0
- breq printstr_end
- rcall uartputc
- cpi temp,13
- brne printstr_loop
- ldi temp,10
- rcall uartputc
- rjmp printstr_loop
-
-printstr_end:
- adiw zl,1 ;rounding
- lsr zh
- ror zl
-
- std y+7,zl
- std y+6,zh
- pop temp
- pop yl
- pop yh
- pop zl
- pop zh
- ret
-
- .dseg
-
-
- .cseg
-
-
-
-
-
-
-; ****************************************************************************
-
-; ------------- system timer 1ms ---------------
-
.dseg
delay_timer1:
.equ clkofs = cnt_1ms-cntms_out
.equ timerofs = cnt_1ms-timer_ms
-
.cseg
+; ------------- system timer 1ms ---------------
+
+
; Timer/Counter1 Compare Match B interrupt
INTERRUPT OC1Baddr
pop zl
reti
+; ----------------------------------------------
+; delay
+;
; wait for temp ms
+;
delay_ms:
sts delay_timer1,temp
brne dly_loop
ret
+; ----------------------------------------------
;
clockget:
ret
-
-
-; --------------- Debugging stuff ---------------
-; Print a line with the Z80 main registers
-
-;.if INS_DEBUG
-
-zflags_to_ch:
- .db "SZ H PNC",0,0
-
-printregs:
- printnewline
-
- push zl
- push zh
- ldiw z,zflags_to_ch*2
- mov temp2,z_flags
-pr_zfl_next:
- lpm temp,z+
- tst temp
- breq pr_zfl_end
- cpi temp,' ' ; Test if no flag
- breq pr_zfl_noflag
- sbrs temp2,7 ;
- ldi temp,' ' ; Flag not set
- rcall uartputc
-pr_zfl_noflag:
- rol temp2
- rjmp pr_zfl_next
-pr_zfl_end:
- pop zh
- pop zl
-
- printstring " A ="
- mov temp,z_a
- rcall printhex
- printstring " BC ="
- lds temp2,z_b
- lds temp, z_c
- rcall printhexw
- printstring " DE ="
- lds temp2,z_d
- lds temp, z_e
- rcall printhexw
- printstring " HL ="
- lds temp2,z_h
- lds temp, z_l
- rcall printhexw
- printstring " SP ="
- movw temp, z_spl
- rcall printhexw
- printstring " PC ="
- movw temp, z_pcl
- rcall printhexw
- printstring " "
- movw xl,z_pcl
- mem_read
- rcall printhex
- printstring " "
- adiw x,1
- mem_read
- rcall printhex
- printstring " "
- adiw x,1
- mem_read
- rcall printhex
- printstring " "
- ret
-;.endif
-
+; vim:set ts=8 noet nowrap
--- /dev/null
+; Print and Debug functions
+;
+; 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 <http://www.gnu.org/licenses/>.
+;
+; $Id$
+;
+
+
+ .cseg
+
+
+;Print a unsigned lonng value to the uart
+; temp4:temp3:temp2:temp = value
+
+print_ultoa:
+ push yh
+ push yl
+ push z_flags
+ push temp4
+ push temp3
+ push temp2
+ push temp
+
+ clr yl ;yl = stack level
+
+ultoa1: ldi z_flags, 32 ;yh = temp4:temp % 10
+ clr yh ;temp4:temp /= 10
+ultoa2: lsl temp
+ rol temp2
+ rol temp3
+ rol temp4
+ rol yh
+ cpi yh,10
+ brcs ultoa3
+ subi yh,10
+ inc temp
+ultoa3: dec z_flags
+ brne ultoa2
+ cpi yh, 10 ;yh is a numeral digit '0'-'9'
+ subi yh, -'0'
+ push yh ;Stack it
+ inc yl
+ cp temp,_0 ;Repeat until temp4:temp gets zero
+ cpc temp2,_0
+ cpc temp3,_0
+ cpc temp4,_0
+ brne ultoa1
+
+ ldi temp, '0'
+ultoa5: cpi yl,3 ; at least 3 digits (ms)
+ brge ultoa6
+ push temp
+ inc yl
+ rjmp ultoa5
+
+ultoa6: pop temp ;Flush stacked digits
+ rcall uartputc
+ dec yl
+ brne ultoa6
+
+ pop temp
+ pop temp2
+ pop temp3
+ pop temp4
+ pop z_flags
+ pop yl
+ pop yh
+ ret
+
+
+;Prints temp2:temp in hex to the uart
+printhexw:
+ push temp
+ mov temp,temp2
+ rcall printhex
+ pop temp
+ ;fall thru
+
+;Prints temp in hex to the uart
+printhex:
+ swap temp
+ rcall printhexn
+ swap temp
+ ;fall thru
+
+;Prints the lower nibble
+printhexn:
+ push temp
+ andi temp,0xf
+ cpi temp,0xA
+ brlo printhexn_isno
+ subi temp,-7
+printhexn_isno:
+ subi temp,-'0'
+ rcall uartputc
+ pop temp
+ ret
+
+;Prints the zero-terminated string following the call statement.
+
+printstr:
+ push zh
+ push zl
+ push yh
+ push yl
+ push temp
+ in yh,sph
+ in yl,spl
+ ldd zl,y+7
+ ldd zh,y+6
+
+ lsl zl
+ rol zh
+printstr_loop:
+ lpm temp,z+
+ cpi temp,0
+ breq printstr_end
+ rcall uartputc
+ cpi temp,13
+ brne printstr_loop
+ ldi temp,10
+ rcall uartputc
+ rjmp printstr_loop
+
+printstr_end:
+ adiw zl,1 ;rounding
+ lsr zh
+ ror zl
+
+ std y+7,zl
+ std y+6,zh
+ pop temp
+ pop yl
+ pop yh
+ pop zl
+ pop zh
+ ret
+
+; --------------- Debugging stuff ---------------
+; Print a line with the Z80 main registers
+
+;.if INS_DEBUG
+
+zflags_to_ch:
+ .db "SZ H PNC",0,0
+
+printregs:
+ printnewline
+
+ push zl
+ push zh
+ ldiw z,zflags_to_ch*2
+ mov temp2,z_flags
+pr_zfl_next:
+ lpm temp,z+
+ tst temp
+ breq pr_zfl_end
+ cpi temp,' ' ; Test if no flag
+ breq pr_zfl_noflag
+ sbrs temp2,7 ;
+ ldi temp,' ' ; Flag not set
+ rcall uartputc
+pr_zfl_noflag:
+ rol temp2
+ rjmp pr_zfl_next
+pr_zfl_end:
+ pop zh
+ pop zl
+
+ printstring " A ="
+ mov temp,z_a
+ rcall printhex
+ printstring " BC ="
+ lds temp2,z_b
+ lds temp, z_c
+ rcall printhexw
+ printstring " DE ="
+ lds temp2,z_d
+ lds temp, z_e
+ rcall printhexw
+ printstring " HL ="
+ lds temp2,z_h
+ lds temp, z_l
+ rcall printhexw
+ printstring " SP ="
+ movw temp, z_spl
+ rcall printhexw
+ printstring " PC ="
+ movw temp, z_pcl
+ rcall printhexw
+ printstring " "
+ movw xl,z_pcl
+ mem_read
+ rcall printhex
+ printstring " "
+ adiw x,1
+ mem_read
+ rcall printhex
+ printstring " "
+ adiw x,1
+ mem_read
+ rcall printhex
+ printstring " "
+ ret
+;.endif
+
+; vim:set ts=8 noet nowrap
+
projects / avrcpm.git / commitdiff