184 commits

Author	SHA1	Message	Date
folkert van heusden	ce1114a159	lf_csr can be altered from an other thread	2023-03-26 13:06:34 +02:00
folkert van heusden	3acf43acf7	sanity checks	2023-03-26 11:47:02 +02:00
folkert van heusden	0754aa692b	Relocate I/O to upper page of virtual address space	2023-03-26 00:22:12 +01:00
folkert van heusden	017339a768	abort should remember d/i-page in bit 4 of mmr0	2023-03-25 21:05:10 +01:00
folkert van heusden	7d5bec2197	apparenty all bits of the MMR3 could be set? even the unused bits?	2023-03-25 20:24:14 +01:00
folkert van heusden	28fa9afcca	clean-up of D-selection	2023-03-25 16:01:55 +01:00
folkert van heusden	b5f9d62f55	Methods for run-mode retrieval	2023-03-25 15:48:50 +01:00
folkert van heusden	d66650b5b2	prev_mode: rm_cur/rm_prev	2023-03-25 13:57:47 +01:00
folkert van heusden	6ad5802866	operator precedence warning from compiler	2023-03-25 10:33:32 +01:00
folkert van heusden	c708acead1	calculate_physical_address: d_i_space_t instead of a bool	2023-03-25 10:05:56 +01:00
folkert van heusden	b2f3fdb0e9	made word_mode into an enum	2023-03-25 09:56:52 +01:00
folkert van heusden	ba5916f750	SP is not selectable via bit 11 of PSW ... R0...R5 are not selectable via run-mode	2023-03-24 19:59:52 +01:00
folkert van heusden	c66b79f1c7	typo	2023-03-24 16:35:22 +01:00
folkert van heusden	f0a199f7c1	i/o-read: value returned	2023-03-24 16:24:20 +01:00
folkert van heusden	875e7ff4dd	logging tweak (bus - write)	2023-03-24 16:06:28 +01:00
folkert van heusden	8f183c26ed	logging tweak (bus - read)	2023-03-24 15:54:51 +01:00
folkert van heusden	3618e27553	byte access to PIR register	2023-03-24 15:36:07 +01:00
folkert van heusden	b145bae3d0	const	2023-03-24 15:04:02 +01:00
folkert van heusden	d0359d510f	stack limit register fix (can only change upper 8 bits)	2023-03-24 14:01:53 +01:00
folkert van heusden	0d639fc65a	PIR register	2023-03-24 13:56:53 +01:00
folkert van heusden	19a733be0d	bus::read word-read from odd i/o did not throw	2023-03-24 09:32:30 +01:00
folkert van heusden	2f69f287ef	bus::calculate_physical_address did not handle non-mmu case	2023-03-24 09:12:37 +01:00
folkert van heusden	0fd4a70600	for some reason unixv5 wants to write a word to the system id i/o address	2023-03-23 22:09:19 +01:00
folkert van heusden	c096114c6b	EKBEE expects 18 bit address space with no RAM behind the last 8/16(?)kB	2023-03-23 20:18:36 +01:00
folkert van heusden	82da553c94	EKBE complains when unibus mapping-bit is masked off	2023-03-23 20:11:55 +01:00
folkert van heusden	9fc748e7e5	layout	2023-03-23 19:34:57 +01:00
folkert van heusden	283fc29c81	system size registers should not trap and also be r/o	2023-03-23 19:28:14 +01:00
folkert van heusden	4e6dff4ad9	SYSTEM_11_44 define in bus.h to aid KKTA/KKTB testing	2023-03-23 16:53:39 +01:00
folkert van heusden	921610643c	stack is in d-space	2023-03-23 16:12:17 +01:00
folkert van heusden	5a7c85b34b	log address-space (d/i)	2023-03-23 14:39:06 +01:00
folkert van heusden	f9eb348572	odd trap handling method	2023-03-23 14:19:35 +01:00
folkert van heusden	9ce5cb0bf6	lock bits / get instruction can trap	2023-03-23 12:44:06 +01:00
folkert van heusden	b184068789	always process ACF? not only when mmu enabled?! experiment!	2023-03-23 11:47:40 +01:00
folkert van heusden	45890daf75	MMR0 in byte mode	2023-03-23 09:14:50 +01:00
folkert van heusden	77997c3a63	gave each throw its own unique identifier	2023-03-22 13:51:13 +01:00
folkert van heusden	8a47015a93	replaced schedule_trap by trap() + throw	2023-03-22 13:48:55 +01:00
folkert van heusden	a820edea23	prevent memory leaks when re-adding devices	2023-03-22 13:44:27 +01:00
folkert van heusden	a672841865	clean-up	2023-03-21 21:16:41 +01:00
folkert van heusden	5bad90a820	lock MMR2 when upper 3 bits of MMR0 are set (any of them)	2023-03-21 19:40:32 +01:00
folkert van heusden	253d8437eb	throw exception when scheduling trap 004 for non existing pages	2023-03-21 19:34:58 +01:00
folkert van heusden	7ea2fa0033	only execute trap when MRR0_bit_9 AND MMR0_&_0xf000 == 0	2023-03-21 18:09:36 +01:00
folkert van heusden	06b5c027d3	do not run trap when 4 upper bits of MMR0 are set (any of them), also set bit 12 when there is a case for traping	2023-03-21 15:07:51 +01:00
folkert van heusden	69118435c4	A/W flags of PDR are reset when PAR is written to	2023-03-21 14:02:51 +01:00
folkert van heusden	406c2a5a09	i/o logging: handle peek_only-flag correct	2023-03-21 13:45:17 +01:00
folkert van heusden	470919e85d	If bit 9 of MMR0 is not set, abort an instruction but do not trap	2023-03-21 11:04:04 +01:00
folkert van heusden	49d16a72e6	ACF logic clean-up	2023-03-21 10:59:53 +01:00
folkert van heusden	ff40cdc82c	11/34 mode removed	2023-03-21 10:32:46 +01:00
folkert van heusden	fa9f57caa0	Bit 8 of MMR0 enables relocation only for 'destination'. Implemented by ... checking for bit 8 when doing a write. https://retrocomputing.stackexchange.com/questions/24664/pdp-11-34-bit-8-in-mmr0-maintenance-mode-what-does-it-do	2023-03-21 09:00:40 +01:00
folkert van heusden	6ac4a9ecb6	odd address check in i/o when in !word_mode	2023-03-21 08:49:49 +01:00
folkert van heusden	c77ae1d617	bus: trap(4) when reading from/writing to i/o or ram that does not exists/is not mapped	2023-03-20 22:27:04 +01:00