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Move AVR programmer from B690 to B160
Also, remove leftovers from previous move.
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@ -3,11 +3,10 @@ MASTER INDEX
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005 Z80 assembler 030 8086 assembler
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050 AVR assembler 70-99 unused
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100 Block editor 120 Visual Editor
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160-259 unused 260 Cross compilation
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160 AVR SPI programmer
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170-259 unused 260 Cross compilation
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280 Z80 boot code 350 Core words
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410 PS/2 keyboard subsystem 420 SD Card subsystem
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440-519 unused 520 Fonts
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550-689 unused
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690 AVR SPI programmer
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700-799 unused
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550-799 unused
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800 8086 boot code
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@ -1,3 +1,4 @@
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( AVR Programmer, load range 160-162. doc/avr.txt )
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( page size in words, 64 is default on atmega328P )
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CREATE aspfpgsz 64 ,
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VARIABLE aspprevx
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5
blk/650
5
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AVR assembler
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651 Guide 655 Instructions list
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660 Loader 661-672 Code
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672 Common AVR consts
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This assembler works very much like Z80 assembler (B200) so
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refer to this documentation first. Here, we document specifici-
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ties.
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All mnemonics in AVR have a single signature. Therefore, we
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don't need any "argtype" suffixes.
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Registers are referred to with consts R0-R31. There is
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X, Y, Z, X+, Y+, Z+, X-, Y-, Z- for appropriate ops (LD, ST).
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XL, XH, YL, YH, ZL, ZH are simple aliases to R26-R31.
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Branching works differently. Instead of expecting a byte to be
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written after the naked op, branching words expect a displace-
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ment argument.
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(cont.)
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blk/652
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This is because there's bitwise ORing involved in the creation
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of the final opcode, which makes z80a's approach impractical.
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This makes labelling a bit different too. Instead of expecting
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label words after the naked branching op, we rather have label
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words expecting branching wordref as an argument. Examples:
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L2 ' BRTS FLBL! ( branch forward to L2 )
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L1 ' RJMP LBL, ( branch backward to L1 )
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16
blk/655
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@ -1,16 +0,0 @@
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AVR instructions list
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OPRd (B663)
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ASR COM DEC INC LAC LAS LAT LSR NEG POP PUSH
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ROR SWAP XCH
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OPRdRr (B664)
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ADC ADD AND CP CPC CPSE EOR MOV MUL OR SBC
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SUB
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OPRdA (B664)
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IN OUT
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OPRdK (B665)
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ANDI CPI LDI ORI SBCI SBR SUBI
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(cont.)
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OPAb (B665)
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CBI SBI SBIC SBIS
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OPNA (B666)
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BREAK CL[C,H,I,N,S,T,V,Z] SE[C,H,I,N,S,T,V,Z] EIJMP ICALL
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EICALL IJMP NOP RET RETI SLEEP WDR
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OPb (B667)
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BCLR BSET
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OPRdb (B667)
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BLD BST SBRC SBRS
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Special (B667,B670)
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CLR TST LSL LD ST
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(cont.)
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Flow (B668)
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RJMP RCALL
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BR[BC,BS,CC,CS,EQ,NE,GE,HC,HS,ID,IE,LO,LT,MI,PL,SH,TC,TS,VC,VS]
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Flow macros (B671)
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LBL! LBL, SKIP, TO, FLBL, FLBL! BEGIN, AGAIN? AGAIN, IF, THEN,
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7
blk/690
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AVR SPI programmer
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This program allows you to access AVR chips Flash memory, EEPROM
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and fuses using a SPI relay. This requires drivers that imple-
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ment the SPI Relay protocol.
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Load range: B691-B693
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doc/avr.txt
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doc/avr.txt
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# Working with AVR microcontrollers
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# Assembling AVR binaries
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TODO
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# Programming AVR chips
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(In this documentation, you are expected to have an AVR binary
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ready to send. To assemble an AVR binary from source, see
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asm.txt)
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To program AVR chips, you need a device that provides the SPI
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protocol. The device built in the rc2014/sdcard recipe fits the
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bill. Make sure you can override the SPI clock because the sys-
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@ -18,7 +16,7 @@ to proper AVR pins as described in the MCU's datasheet. Note
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that this device will be the same as the one you'll use for any
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modern SPI-based AVR programmer, with RESET replacing SS.
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The AVR programming code is at B690.
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The AVR programming code is at B160.
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Before you begin programming the chip, the device must be desel-
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ected. Ensure with "0 (spie)".
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