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macdoogie

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  1. macdoogie

    Fun with colour on my SE/30

    Are you sure that's an SVGA monitor? From the finder screen displayed above it looks like it's running 640x480 and not 800x600. When I modded a color classic to run at 800x600, it seemed clear that the dot pitch(stripe pitch actually on a Trinitron) wasn't quite fine enough to handle the 8x6 resolution. From my understanding the 9"(some call it 10"?) CRT was the same as Sony's famous studio monitors which were for older SDTV 480i resolutions(Actually 525 lines, but not all are visible).
  2. macdoogie

    Fun with colour on my SE/30

    These newer industrial replacement displays actually use modern TFT technology like IPS, A-Si, and have LED backlights, so you can get ones that look pretty good. The Trinitron would win on contrast ratio, but at 640x480, the TFT would be sharper than a VGA modded Color Classic. Even at 512x384 the color classic can get fuzzy requiring a tradeoff between focus at the center of the screen or at the edges. Also, I'm still thinking about a replacement rear case to convert the CC into a slim, flat panel version with the MLB mounted vertically and the I/O ports facing down. The SCSI HDD would be replaced with an SSD and the floppy slot would probably accept SC cards with floppy emulation(Multiple floppy images on a card). Just a bunch of crazy ideas, but starting with a CRT replacement may prove useful. These CRTs aren't going to last forever.
  3. macdoogie

    Fun with colour on my SE/30

    I noticed that the 8.4" screen chosen was one with an LVDS interface. The same company that makes that screen(Looks like Tianma may have purchased NEC's industrial TFT division?) has the same panels with a TTL interface, which is the more traditional RGB+HVC parallel interface. Those "everything-in-one" controller boards usually have both outputs present, but I'l like to make a more dedicated controller board that doesn't have a ton of unused connectors or need the OSD menu + buttons to work properly. Actually, I believe for the Color Classic, I can create a whole new analog board + TFT display swap kit. The new analog board would have the TFT driver and backlight, the digital power supplies for the logic board, should be able to handle the "soft" brightness and contrast controls, and maybe even be able to do stereo audio(at least with a LC/Perf 5xx series logic board installed). I was all about 10.4" displays, except those require hacking the bezel and the end result would just not "feel" like a CC anymore. I did some measurements, and the actual viewable image size of the CC's Trinitron is actually very close to the 8.4" actual of the Tianma/NEC panel. Of course some bezel or filler would still be required. I really like the idea of the molded resin which may even be easier with the cylindrical Trinny than with the Spherical CRT of the SE/30. The only other sticking point is the AC inlet. In order to not make something that less careful people might by chance electrocute themselves with, I'd probably have to convert the power input to a brick or wall-wart; Yuk! Still, there are some very capable slim and compact 12-18V AC/DC wall supplies which could do the job since a lot of the power used by these machines is in the CRT monitor. Also, the total unit weight would be cut by about a third(estimated). I already ordered a parallel interface version of the 8.4" panel and plan to make a prototype "VGA Monitor" to prove it can work. Any interest out there in me turning this into a replacement CC analog board? I had actually had an idea to make a new rear housing for the CC to repackage it into a slim, flat panel machine, but for now I'll start with the monitor.
  4. macdoogie

    Fun with colour on my SE/30

    Any chance you could make a similar resin surface for the Color Classic's tube? I'm thinking of making a more dedicated controller board for the TFT if there is interest.
  5. Can't say that for certain, as I was just comparing the high level specs. However, in general, when the part number is exactly the same but with differing suffixes, the differences are usually just variants of the backlight and/or the polarizer stackup(to trade off contrast/viewing angle, etc) or even just "matte" vs glossy top film. Since this display appears to have the same interface and resolution, I would suspect that the LVDS interface is driven the same way for both. If I could dig up the data sheet for both, I could be a bit more certain.
  6. Ah, thanks for the clarification If you have a link to the driver board, I may be able to provide some insight. I have a lot of experience with TFT displays(about 5 years) from 1.5" OLEDs to 10.4" TFTs. I just don't have any direct experience with CCFL BLCs.
  7. Who are "They" that you refer to? From the looks of it the M is just a 200nit brightness panel compared to the 150nits of the S variant. If the BLC is also on the driver board, I would think that some component substitution could be done to accommodate whatever variance in voltage or current is needed for the brighter panel. Scratch that. I just realized that these are CCFL and not LED. There could be considerable differences in the Backlight Controller. I've actually never done a BLC for a CCFL panel myself. I know the voltages are much higher than for LED. I once singed my finger(made a sizzling sound and left a burn) on the inverter for the first 15" iMac.
  8. Note that from my reading of the QXGA Panel data sheet referenced in an earlier post, that display is what is called a "Dual-Link" LVDS. It needs 8-lanes to achieve that resolution. Regardless of the interface, TFT panels themselves will only accept data at their native resolution. Any scaling would have to be done by external circuitry on those adapter boards. Also note that while many of these "everything-in-one" adapter boards which accept VGA/Composite/S-video/DVI/HDMI may look the same as each other, there is still a bit of programming done on the board to adapt it to the target display. Most of these boards I've encountered are based on a conversion chip made by RealTek(The chip with the crab icon on it) which is actually quote sophisticated and also includes the On Screen Display for menus for brightness/contrast/etc. I don't recall off the top of my head whether they have a dual-link LVDS version of that chip. All older panels that are LVDS or TMDS require dual link to do resolutions higher than 19x10 or 16x12 IIRC. That's why newer standards such as MIPI and Display Port were invented. They use a higher data rate to get more pixels with less data lanes. I was actually surprised to see mention of "Old" machines with QVGA, until I remembered that Dual-Link(Sometimes called Dual-Channel) was a thing...
  9. Wow, you guys have some brass bolt-fastening hardware! However you may be approaching this from the wrong "direction". A lot of things to address here, since I'm coming in late. 1. Getting the device/card "on the bus" with no contention is one thing, but that's no guarantee that the drivers will load. The PDS slot for the LC is hardwired to the 00EXXXXX/FEXXXXXX address space and designed for machines that intended to only have/fit a single device in that space. There's a good chance that the drivers are hard coded to expect the card to be at that address space. You can probably successfully remap the card to respond to a different address as you are attempting here, but if the driver always looks for the card at $E, it'll never find it at it's new location. This stuff predates plug-and-play and the PDS slot is more of a pseudo slot as described in the Apple Reference guides and dev notes. Same thing with the IRQ, when that fires, if it's not mapped to where the driver expects it, it may not get serviced. 2. I highly suspect that NuBus drivers are not going to talk to the PDS version of the card. While NuBus is apparently not a true "bridged", isolated bus in that it shares address and data lines with the processor bus directly. There are the side state machines(control logic really) that the Nubus Driver likely uses to initiate transactions and such. I'm not a NuBus expert, but I came to Apple in the late PCI architecture days and well into the PCIE generation. I worked on the FireWire controller ASIC and did a lot of I/O integration so I have pretty comprehensive knowledge of processor and I/O architecture. I suspect the PseudoSlot scheme that the IIsi and SE/30 implement rely on the card's hardware emulating the effect of both the host and card NuBus state machine controllers, since those were likely just memory mapped devices in the NuBus Macs. The PDS card probably expects a different protocol. 3. To address some machine architecture comparisons earlier in the thread(where is was said that the MacClassic was an offshoot of the SE/30 and such), a more accurate lineage is this: MacClassic = Cost Reduced Mac SE(not /30) with a QFP or PLCC(I forget which) 68000 chip and a slightly improved version of the BBU among other things like lighter weight and not being made in USA. MacClassic II = Cost Reduced and Performance reduced "Sort Of" SE/30 only not at all really with only a 16-bit data path and no expandability other than memory and the FPU card. Color Classic = Mostly related to the LCII architecturally. Again both have a 16-bit data path and I believe share ASICs. I worked with engineers who did these machines(and ASICs), but they were getting fuzzy on the details as the decades passed. Color Classic II(FWIW) = Based on the LC-III architecture, with a full 32-bit data bus, albeit at 33Mhz instead of 25Mz, so actually a bit better than the LC-III. I think there was an LC-III+ that was 33Mhz? There definitely was a Performa 460 that was(The 450 was the 25Mhz model). 4. The biggest problem I see with any thoughts of porting these cards to the 68000 machine is that the drivers really won't know what to do with the hardware, probably would not even load(I suspect the machine Gestalt has some influence) and if they were forced to load in some way, they'd throw a trap the minute some 68020/68030 instruction was encountered since the drivers were probably compiled for post 68000 CPUs. Not trying to discourage the effort here. Half of the reason to do this stuff is for educational purposes! Personally, I would have started by putting a logic analyzer on the bus and sniffing out the early accesses to the card space. You should be able to see either the OS or Tattle Tech "sniffing" out the declaration ROM to see what's out there. The thing to find out is whether the OS or drivers "poll" all of the virtual slots, or whether they go straight to, say $E, in the case of this card. Note that despite all this talk of Slots and PseudoSlots, all of this stuff, including the captive I/O on the logic board are just memory mapped into the CPUs address space. It's not too difficult to "relocate" the hardware, but if the OS or Drivers don't know where to look for it, or if the IRQs are hardcoded(in the software) then still won't work with stock drivers. So far, my hacking experience with these machines involves making a Mac SE PDS-Slot ROM card(Anyone interested in this project? I can start a thread) as well as making interposer cards for both the SE PDS Slot and LC PDS slot with logic analyzer headers on them. I can make kits available for those as well if people are interested. Oh yeah, I've also made a small PCB replacement for the IIe Y-Cable and a replacement button board for the Color Classic with an RGB LED and a way to program the color mode with the panel buttons, while still allowing them to function as volume and brightness :P I plan on building a batch of these up and offering them for sale as well. Should I start threads for those? I've been keeping this stuff to myself for the last few years, simply because I've been super busy. Anyway, I'm willing to help answer technical Q's and provide lab tips. Not sure I have a lot of bandwidth to do extra lab work at the moment, but maybe I can provide guidance where needed.
  10. How could anyone hate the cute little CC? It never hurt anyone! I have a plan to make a flat screen little tribute to my favorite 68K machine
  11. With System 6, A trick I learned that allows many older games to run is to make sure that MultiFinder is turned off. I think that is the key to fixing the no mouse clicking in Lode Runner and other games that keep switching to the finder when you click the mouse.
  12. macdoogie

    Apple //c Platinum?

    Hello All, Time to clear this up... I recently purchased a sealed in box A2S4100 (Memory Expandable) Apple IIc as well (I'm not the Flickr guy, I got mine around XMAS). I too opened the sealed unit as it was screaming to be liberated after all those years The color is "Fog" as ALL Apple IIc's were. Apple never made a platinum 5.25 drive IIc. My IIc was made after the IIgs came out and after the Mac line went platinum. Apple continued to make the original IIc in the "Fog" color until it EOL'd. The color change that DID occur was in the Keyboard Keys, Power Cords, and Disk Drive door which changed from a Khaki or Tan color into a gray color. I'm pretty sure these changes came about co-incident with the A2S4100 "Memory Expandable" IIc model.
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