diff options
Diffstat (limited to 'src/jtag/rlink/call.m4')
| -rw-r--r-- | src/jtag/rlink/call.m4 | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/src/jtag/rlink/call.m4 b/src/jtag/rlink/call.m4 index 92e39207..0139c7c2 100644 --- a/src/jtag/rlink/call.m4 +++ b/src/jtag/rlink/call.m4 @@ -67,7 +67,7 @@ m4_define(`m4_delay_setup', A.L = m4_low_nybble(`('$1`) / 2') Y = A )') - + m4_define(`m4_delay_loop', `; delay loop (m4_eval($1) cycles)' `m4_ifelse(m4_eval(`('$1`) < 6'), 1, @@ -79,7 +79,7 @@ m4_define(`m4_delay_loop', )') m4_dnl These are utility macros for use with delays. Specifically, there is code below which needs some predictability in code size for relative jumps to reach. The m4_delay macro generates an extra NOP when an even delay is needed, and the m4_delay_loop macro generates an extra NOP when an odd delay is needed. Using this for the argument to the respective macro rounds up the argument so that the extra NOP will not be generated. There is also logic built in to cancel the rounding when the result is small enough that a loop would not be generated. - + m4_define(`m4_delay_loop_round_up', `m4_ifelse(m4_eval($1` < 6'), 1, $1, m4_eval(`(('$1`) + 1) / 2 * 2'))') m4_define(`m4_delay_round_up', `m4_ifelse(m4_eval($1` < 6'), 1, $1, m4_eval(`(('$1`) / 2 * 2) + 1'))') @@ -106,7 +106,7 @@ m4_divert(`0')m4_dnl A.H = 0xc ; lookup table at 0x1550 + 0xc0 = 0x1610 ; branch to address in lookup table - Y = A + Y = A A = <Y> BRANCH @@ -203,7 +203,7 @@ entry_download: ; ; Ack buffer 0 in download mode ; A.L = 0x1 ; BUFFER_MNGT = A -; +; ; STATUS STOP @@ -213,7 +213,7 @@ entry_download: A = CMP01 ; bits 3..0 contain the number of bytes to shift - 1 A.H = 0 - Y = A ; loop counter + Y = A ; loop counter A = CMP01 EXCHANGE @@ -262,7 +262,7 @@ opcode_shift_tdi_andor_tms_bytes__loop: A = CMP01 ; bits 3..0 contain the number of bytes to shift - 1 A.H = 0 - Y = A ; loop counter + Y = A ; loop counter opcode_shift_tdo_bytes__loop: SHIFT MPEG PIN0=>IN @@ -303,7 +303,7 @@ opcode_shift_tdio_bytes__loop: JP sub_shift_tdio_bits opcode_shift_tdio_bytes__sub_return: - + A = CMP10 ; byte loop counter CP A=>X CLC @@ -323,7 +323,7 @@ opcode_shift_tdio_bytes__sub_return: A = CMP01 ; bits 2..0 contain the number of bits to shift - 1 A.H = 0 BCLR 3 ; set TMS=1 if bit 3 was set - CMP11 = A ; bit loop counter + CMP11 = A ; bit loop counter A.H = opcode_shift_tdio_bits__sub_return A.L = opcode_shift_tdio_bits__sub_return @@ -334,7 +334,7 @@ opcode_shift_tdio_bytes__sub_return: DR_CARD = A JP sub_shift_tdio_bits opcode_shift_tdio_bits__sub_return: - + A = X ;DR_MPEG = A ; return TCK low, as str912 reset halt seems to require it BRANCH @@ -365,9 +365,9 @@ m4_delay_setup(m4_delay_loop_round_up(SETUP_DELAY_CYCLES - 1)) m4_delay_loop(m4_delay_loop_round_up(SETUP_DELAY_CYCLES - 1)) BSET 2 ; TCK high - DR_MPEG = A + DR_MPEG = A - A = DR_MPEG ; set carry bit to TDO + A = DR_MPEG ; set carry bit to TDO CLC BCLR 0 JP +2 @@ -431,7 +431,7 @@ opcode_shift_tms_tdi_bit_pair__sub_return: BSET 3 ; bit says whether to return TDO JP +2 ADR_BUFFER1 -= X ; subroutine returns it, so undo that - + A = X DR_MPEG = A ; return TCK low, as str912 reset halt seems to require it BRANCH @@ -443,7 +443,7 @@ opcode_shift_tms_tdi_bit_pair__sub_return: A = CMP01 ; bits 3..0 contain the number of bits to shift - 1 (only 1-8 bits is valid... no checking, just improper operation) A.H = 0 - CMP11 = A ; bit loop counter + CMP11 = A ; bit loop counter A = DATA_BUFFER0 ; get byte from input buffer ADR_BUFFER0 += X @@ -467,7 +467,7 @@ m4_delay_setup(SETUP_DELAY_CYCLES - 1) m4_delay_loop(SETUP_DELAY_CYCLES - 1) BSET 2 ; TCK high - DR_MPEG = A + DR_MPEG = A m4_delay(HOLD_DELAY_CYCLES - 10) |