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Arbee's latest activity
A
Arbee
replied to the thread
Quadra 605 CD Boot?
.
Cool! I had the Pioneer audio version of that changer, used the same cartridges.
Apr 1, 2024
A
Arbee
commented on
3lectr1cPPC
's profile post.
USB did exist pre-iMac but there weren't many peripherals and the support in Windows barely existed before Windows 98 (and it wasn't...
Mar 31, 2024
A
Arbee
replied to the thread
Word access odd Address Exceptions on 68K software - were they ever used?
.
Moto simplified both the MMU and FPU as the 68K advanced. The 68851 and 881/882 were super complicated, the '030 contained most but not...
Mar 28, 2024
A
Arbee
replied to the thread
Word access odd Address Exceptions on 68K software - were they ever used?
.
The M88K MMU is (unsurprisingly) pretty similar to the various 68K versions. Most 680x0 machines do 24/32-bit by switching MMU tables...
Mar 26, 2024
A
Arbee
replied to the thread
Word access odd Address Exceptions on 68K software - were they ever used?
.
Right, I see that in MAME also on a first-time boot of a machine where there isn't saved PRAM and it's booting the Legacy Recovery ISO...
Mar 26, 2024
A
Arbee
replied to the thread
Apple IIe Resistor
.
That video looks like it's working but the monitor can't sync to it.
Mar 26, 2024
A
Arbee
replied to the thread
Word access odd Address Exceptions on 68K software - were they ever used?
.
As far as I know the odd address exceptions happen even on loads/stores, not just execution. So the check (basically if (address & 1)...
Mar 26, 2024
A
Arbee
replied to the thread
Reverse-engineering the Lapis ProColorServer 8 II
.
CRT monitors were *much* more tolerant of off-spec timings. That was a big deal for MAME after CRT monitors fell out of use on...
Mar 25, 2024
A
Arbee
replied to the thread
Word access odd Address Exceptions on 68K software - were they ever used?
.
An exception *is* raised and it jumps through a vector like usual. I'm not sure off the top of my head if that vector is ever valid...
Mar 25, 2024
A
Arbee
replied to the thread
SE/30 is ASC a must for booting?
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The boot chime code in the ROM polls the ASC state, so you likely won't get visible progress without it.
Mar 24, 2024
A
Arbee
replied to the thread
Do the classic Macs support DMA?
.
All of the SONIC cards from Apple do use direct DMA to RAM, including the Quadra on-board and the LC PDS cards. It's easy to tell on...
Mar 17, 2024
A
Arbee
replied to the thread
Do the classic Macs support DMA?
.
Just to clarify, most 68K Macs do what is called "pseudo-DMA" where something in one of the custom chips (it varies which chip by...
Mar 17, 2024
A
Arbee
replied to the thread
Fantasy M88100 Macs
.
Assuming it's using the V8's integrated audio and video, the RAM has to be 16 bits wide as far as I'm aware.
Mar 12, 2024
A
Arbee
replied to the thread
16 color and 8 bit sound in PPC 7.1.2?
.
The NuBus PowerMacs have the same sound system as the PCI machines, so if the game requires 8-bit you need 68k.
Mar 9, 2024
A
Arbee
replied to the thread
Fantasy M88100 Macs
.
Quoting from the Freeport ERS:
Mar 7, 2024
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