#a2000 — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #a2000, aggregated by home.social.
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Amiga people: Do any of the new accelerators that work with the Amiga 2000 allow fallback to the original 68000 by way of a PHYSICAL SWITCH or jumper?
I want an accelerator that can be disabled (without using soft-menus to control the state) so that the Amiga is able to fall back to its 100% exact original 68000 state, which some demos require to run properly, due to cycle-precise coding.
I have an A2620 68020 accelerator in my NTSC A2000, but it does not have a physical switch (just a soft menu) and the state gets lost when I juggle that soft menu and the need to also use Degrader to reboot into PAL mode.
Apparently the A2620 can be modified to add a switch, but it's beyond my abilities.
Many thanks.
#Amiga #CommodoreAmiga #Amiga2000 #A2000 #accelerators #amigademos #demoscene #scenedemos #AmigaDOS #MC68K #help #vintagetech #vintagecomputing #retrocomputing #retrocomputers
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Amiga people: Do any of the new accelerators that work with the Amiga 2000 allow fallback to the original 68000 by way of a PHYSICAL SWITCH or jumper?
I want an accelerator that can be disabled (without using soft-menus to control the state) so that the Amiga is able to fall back to its 100% exact original 68000 state, which some demos require to run properly, due to cycle-precise coding.
I have an A2620 68020 accelerator in my NTSC A2000, but it does not have a physical switch (just a soft menu) and the state gets lost when I juggle that soft menu and the need to also use Degrader to reboot into PAL mode.
Apparently the A2620 can be modified to add a switch, but it's beyond my abilities.
Many thanks.
#Amiga #CommodoreAmiga #Amiga2000 #A2000 #accelerators #amigademos #demoscene #scenedemos #AmigaDOS #MC68K #help #vintagetech #vintagecomputing #retrocomputing #retrocomputers
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Falls wider Erwarten jemand dafür noch Verwendung hat: Ich hab heute Abend einen ganzen Stapel alter Workbench 1.3.2 Disketten online gestelllt. Verschiedene Versionen für den Amiga A500/A2000. Die dürften alle um 1989 erschienen sein. Deutsche Releases, jedoch großteils auf Englisch, wie damals noch üblich.
https://archive.org/details/@dfxthomas
Viel Spaß damit... 😎 😉
#Commodore #Amiga #Retro #RetroComputing #Workbench #A500 #A2000 #80s #80er #Disketten #FloppyDisk
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Falls wider Erwarten jemand dafür noch Verwendung hat: Ich hab heute Abend einen ganzen Stapel alter Workbench 1.3.2 Disketten online gestelllt. Verschiedene Versionen für den Amiga A500/A2000. Die dürften alle um 1989 erschienen sein. Deutsche Releases, jedoch großteils auf Englisch, wie damals noch üblich.
https://archive.org/details/@dfxthomas
Viel Spaß damit... 😎 😉
#Commodore #Amiga #Retro #RetroComputing #Workbench #A500 #A2000 #80s #80er #Disketten #FloppyDisk
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Wilson Announces 50% Off One-Day Glove Bonanza https://www.rawchili.com/mlb/337536/ #50%GloveBonanza #50%Off #A2000 #A2K #Baseball #OneDayOnly #Wilson #WilsonBaseballGloves #WilsonFamilyOfBrands #WilsonGloves
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I ordered a new, ceramic and gold MC68010 to go in my Amiga 2000 as I remove the A2620 '020 board due to issues with some tightly-coded old and new OCS/ECS demos (my main use of the system). I came to realize some of these issues would exhibit with the '010 as well, and for very little performance gain.
And so, the loveld 68010 may become one of my "desk chips" to glance at from time to time as I do my thing at the desk, like my lovely ceramic and gold Freescale '000.
#MC68010 #Motorola #CPU #chips #Amiga #A2000 #Freescale #ceramic #vintagecomputing #retrocomputing #computinghistory #MC68020 #ByteCellar
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I ordered a new, ceramic and gold MC68010 to go in my Amiga 2000 as I remove the A2620 '020 board due to issues with some tightly-coded old and new OCS/ECS demos (my main use of the system). I came to realize some of these issues would exhibit with the '010 as well, and for very little performance gain.
And so, the loveld 68010 may become one of my "desk chips" to glance at from time to time as I do my thing at the desk, like my lovely ceramic and gold Freescale '000.
#MC68010 #Motorola #CPU #chips #Amiga #A2000 #Freescale #ceramic #vintagecomputing #retrocomputing #computinghistory #MC68020 #ByteCellar
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I am considering the configuration of my Amiga 2000 w/ 68020 accelerator... I would appreciate opinions from drivers of slotted Amigas, here.
I have an Amiga 2000 with SCSI + SCSI2SD, 4MB 16-bit FAST RAM, 1MB CHIP RAM, etc. It also has an A2620 68020 accelerator (14MHz) with 2MB 32-bit FAST RAM which is meager, but makes things noticeably faster on the Workbench. Most of what I do on this is watch demos and play games, though. All I do on desktop, really, is use AmiTCP and ncftp to bring files over and run IMP sometimes.
I recently downloaded the Amiga demo 'Downslope' and noticed it's less fluid / smooth with the accelerator enabled. I've seen this before here and there, but assumed that the accelerator was doing my a solid in demos - giving a bit of a boost.
I commented about this in the Pouet 'Downslope' thread and the developer came in and commented,
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"Accelerators often introduce an asynchronicity between CPU and chip memory, which adds to chip access latency.
This can be worsened by the occurrance of many interrupts, which can cause additional strain on memory on a higher CPU.
If we are unlucky, not even the much faster execution time of the higher CPU can make up for the additional latencies and strain on chip memory.
It's a matter of focus on the target. There are side effects on higher CPUs which are difficult to anticipate, and usually you have only a limited number of machines for testing."
---This makes sense, I suppose. Is this common? Are people with '030, '040, '060 accelerators having a lesser experience with demos due to CHIP RAM latency than with base '000? Certainly in some scenarios the more powerful CPU helps hugely for demos and games alike - I've seen this on my '020. But, yes -- demos are the most tightly coded of all Amiga apps, certainly. To the metal, etc.
So I am wondering now, should I remove the accelerator to get the most out of OCS/ECS demos on the system? Yes, I can disable the accelerator with a right mouse click at reboot, but that gets in the way of keeping Degrader's PAL state in effect, causing a hassle. (it's an NTSC A2000, unfortunately).
Anyone been down this road? Thoughts?
#Amiga #Commodore #CommodoreAmiga #A2000 #A2500 #MC68000 #MC68020 #MC68030 #demo #demos #demoscene #scenedemo #vintagecomputing #retrocomputing #vintagecomputers #retrocomputers #retrogaming #hardware #vintaghardware #A2620 #A2630 #DaveHaynie #ZorroII #terriblefire #oldcomputers
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I am considering the configuration of my Amiga 2000 w/ 68020 accelerator... I would appreciate opinions from drivers of slotted Amigas, here.
I have an Amiga 2000 with SCSI + SCSI2SD, 4MB 16-bit FAST RAM, 1MB CHIP RAM, etc. It also has an A2620 68020 accelerator (14MHz) with 2MB 32-bit FAST RAM which is meager, but makes things noticeably faster on the Workbench. Most of what I do on this is watch demos and play games, though. All I do on desktop, really, is use AmiTCP and ncftp to bring files over and run IMP sometimes.
I recently downloaded the Amiga demo 'Downslope' and noticed it's less fluid / smooth with the accelerator enabled. I've seen this before here and there, but assumed that the accelerator was doing my a solid in demos - giving a bit of a boost.
I commented about this in the Pouet 'Downslope' thread and the developer came in and commented,
---
"Accelerators often introduce an asynchronicity between CPU and chip memory, which adds to chip access latency.
This can be worsened by the occurrance of many interrupts, which can cause additional strain on memory on a higher CPU.
If we are unlucky, not even the much faster execution time of the higher CPU can make up for the additional latencies and strain on chip memory.
It's a matter of focus on the target. There are side effects on higher CPUs which are difficult to anticipate, and usually you have only a limited number of machines for testing."
---This makes sense, I suppose. Is this common? Are people with '030, '040, '060 accelerators having a lesser experience with demos due to CHIP RAM latency than with base '000? Certainly in some scenarios the more powerful CPU helps hugely for demos and games alike - I've seen this on my '020. But, yes -- demos are the most tightly coded of all Amiga apps, certainly. To the metal, etc.
So I am wondering now, should I remove the accelerator to get the most out of OCS/ECS demos on the system? Yes, I can disable the accelerator with a right mouse click at reboot, but that gets in the way of keeping Degrader's PAL state in effect, causing a hassle. (it's an NTSC A2000, unfortunately).
Anyone been down this road? Thoughts?
#Amiga #Commodore #CommodoreAmiga #A2000 #A2500 #MC68000 #MC68020 #MC68030 #demo #demos #demoscene #scenedemo #vintagecomputing #retrocomputing #vintagecomputers #retrocomputers #retrogaming #hardware #vintaghardware #A2620 #A2630 #DaveHaynie #ZorroII #terriblefire #oldcomputers
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West Virginian Amiga 2000 with a Rom Switcher
#amiga #amiga2000 #a2000 #retrorepair #amigarepair
https://theoasisbbs.com/west-virginian-amiga-2000-with-a-rom-switcher/?feed_id=1042&_unique_id=677d34e20eb14 -
West Virginian Amiga 2000 with a Rom Switcher
#amiga #amiga2000 #a2000 #retrorepair #amigarepair
https://theoasisbbs.com/west-virginian-amiga-2000-with-a-rom-switcher/?feed_id=1042&_unique_id=677d34e20eb14 -
Photo of my Amiga 2000 (taken in 1989) running the scenedemo Raster Magic by Megaforce.
The Amiga is equipped with a BridgeBoard, hence the internal and external 5.25" floppy drives, with a SupraModem 2400 atop the latter. The CRT is a Commodore 1084S. Pack-in poster from the game Starglider on the wall to the left.
https://www.pouet.net/prod.php?which=13481
#Amiga #demoscene #scenedemo #megaforce #vintagecomputing #retrocomputing #retrogaming #A2000 #Amiga2000 #Commodore #CRT #nostalgia #photo
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Photo of my Amiga 2000 (taken in 1989) running the scenedemo Raster Magic by Megaforce.
The Amiga is equipped with a BridgeBoard, hence the internal and external 5.25" floppy drives, with a SupraModem 2400 atop the latter. The CRT is a Commodore 1084S. Pack-in poster from the game Starglider on the wall to the left.
https://www.pouet.net/prod.php?which=13481
#Amiga #demoscene #scenedemo #megaforce #vintagecomputing #retrocomputing #retrogaming #A2000 #Amiga2000 #Commodore #CRT #nostalgia #photo
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Oh neat, the #A500 I found at the fair is a rev6 with an 8372 agnus chip. Easy 1mb of chipmem then.
One day I should really try to get hold of a 8375 and try an adapter to get to 2mb. Would probably fit it into an #A2000 though, not an A500.
I *think* I remember reading that the kickstart can now be modified to initialize an NTSC agnus for operation on a PAL #Amiga. Maybe those are easier to source. Or were, once, a long time ago. -
Oh neat, the #A500 I found at the fair is a rev6 with an 8372 agnus chip. Easy 1mb of chipmem then.
One day I should really try to get hold of a 8375 and try an adapter to get to 2mb. Would probably fit it into an #A2000 though, not an A500.
I *think* I remember reading that the kickstart can now be modified to initialize an NTSC agnus for operation on a PAL #Amiga. Maybe those are easier to source. Or were, once, a long time ago.