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  • Bill Buckels' BMP2DHR Missing a Viewer

    From Bill Chatfield@bill_chatfield@yahoo.com to comp.sys.apple2 on Sat Dec 23 20:56:42 2023
    From Newsgroup: comp.sys.apple2

    I can't figure out how to display the DHGR files that BMP2DHR produces.
    There are .A2IF files on a .DSK image, but I can't see any way to view
    them. It seems kind of cruel to provide a converter without a viewer.
    Haha

    --- Synchronet 3.20a-Linux NewsLink 1.114
  • From I am Rob@gids.rs@sasktel.net to comp.sys.apple2 on Sun Dec 24 03:36:13 2023
    From Newsgroup: comp.sys.apple2

    Do it in Applesoft
    10 D$=CHR$(4)
    15 ?D$”PR#3”
    20 HGR:POKE49246,0:POKE49237,0:CALL62454:POKE4936,0:TEXT
    25INPUT”Enter Dbl Hi-res file to view: “;NF$
    30 IF NF$=“” THEN TEXT:END
    40POKE49237,0: ?D$ “BLOAD “NF$”,A$2000,L$2000”
    50POKE49236,0: ?D$ “BLOAD “NF$”,A$2000,L$2000,B$2000”
    60 CALL -3100: GET A$: TEXT : GOTO 25
    --- Synchronet 3.20a-Linux NewsLink 1.114
  • From Bill Chatfield@bill_chatfield@yahoo.com to comp.sys.apple2 on Sun Dec 24 14:35:51 2023
    From Newsgroup: comp.sys.apple2

    On Sun, 24 Dec 2023 03:36:13 -0800 (PST)
    I am Rob <gids.rs@sasktel.net> wrote:
    Do it in Applesoft

    10 D$=CHR$(4)
    15 ?D$”PR#3”
    20 HGR:POKE49246,0:POKE49237,0:CALL62454:POKE4936,0:TEXT
    25INPUT”Enter Dbl Hi-res file to view: “;NF$
    30 IF NF$=“” THEN TEXT:END
    40POKE49237,0: ?D$ “BLOAD “NF$”,A$2000,L$2000”
    50POKE49236,0: ?D$ “BLOAD “NF$”,A$2000,L$2000,B$2000”
    60 CALL -3100: GET A$: TEXT : GOTO 25
    Okay, that is awesome. I was actually hoping for a piece of code I
    could understand rather than a binary loader.
    So are the 2 BLOADs because of the AUX memory? You're switching over to
    AUX memory, loading into that, and then switching back and loading into
    regular memory (or the opposite). But it looks like you're loading the
    same thing into both?
    --- Synchronet 3.20a-Linux NewsLink 1.114
  • From TRS-90@matthewmpower@gmail.com to comp.sys.apple2 on Mon Dec 25 01:16:55 2023
    From Newsgroup: comp.sys.apple2

    "Bill Chatfield" wrote:

    I can't figure out how to display the DHGR files that BMP2DHR produces.
    There are .A2IF files on a .DSK image, but I can't see any way to view
    them. It seems kind of cruel to provide a converter without a viewer.

    Well on a IIgs I would say use Super Convert 4.0

    On 8-bit I would try //gif; I believe both programs were written by Jason Harper.

    Matt
    --- Synchronet 3.20a-Linux NewsLink 1.114
  • From qkumba@peter.ferrie@gmail.com to comp.sys.apple2 on Mon Dec 25 15:51:30 2023
    From Newsgroup: comp.sys.apple2

    The second BLOAD starts at offset $2000 (via B$) in the file.
    --- Synchronet 3.20a-Linux NewsLink 1.114
  • From Bill Chatfield@bill_chatfield@yahoo.com to comp.sys.apple2 on Tue Dec 26 11:20:40 2023
    From Newsgroup: comp.sys.apple2

    On Mon, 25 Dec 2023 15:51:30 -0800 (PST)
    qkumba <peter.ferrie@gmail.com> wrote:

    The second BLOAD starts at offset $2000 (via B$) in the file.

    I see that, but what does that result in? The AUX data starts at $2000
    in the file? I don't know what the file format actually is, so I can't
    make any conclusions about what it means. Thanks, though. I'm learning
    a lot.

    --- Synchronet 3.20a-Linux NewsLink 1.114
  • From I am Rob@gids.rs@sasktel.net to comp.sys.apple2 on Tue Dec 26 10:07:29 2023
    From Newsgroup: comp.sys.apple2

    The second BLOAD starts at offset $2000 (via B$) in the file.
    I see that, but what does that result in? The AUX data starts at $2000
    in the file? I don't know what the file format actually is, so I can't
    make any conclusions about what it means. Thanks, though. I'm learning
    a lot.

    I will just mention that we are not your teachers. There are books for that. Look for the Apple IIe Technical Reference manual.

    But I will just mention that Aux memory mirrors main memory. The POKE's switch one or the other in, but only certain parts of memory. I will leave that up to you to find out which parts of memory. :)
    --- Synchronet 3.20a-Linux NewsLink 1.114
  • From fadden@fadden@fadden.com to comp.sys.apple2 on Fri Dec 29 09:43:32 2023
    From Newsgroup: comp.sys.apple2

    On 12/26/2023 8:20 AM, Bill Chatfield wrote:
    The second BLOAD starts at offset $2000 (via B$) in the file.

    I see that, but what does that result in? The AUX data starts at $2000
    in the file? I don't know what the file format actually is, so I can't
    make any conclusions about what it means. Thanks, though. I'm learning
    a lot.

    FWIW, https://ciderpress2.com/doc-index.html was created to make this
    sort of question easier to answer.

    In this case, https://github.com/fadden/CiderPress2/blob/main/FileConv/Gfx/DoubleHiRes-notes.md
    has a list of authoritative references (//e tech note #3, file type note $08/0000), and summarizes the standard file layout:

    "Double hi-res graphics screens are generally stored as a 16KB file. The
    first 8KB holds the aux RAM portion, the second 8KB holds the main RAM portion."

    The documents are stored in the CiderPress II source tree, next to the relevant code. If something is ambiguous, you can back up one level in
    the github source tree and open the converter source.

    --- Synchronet 3.20a-Linux NewsLink 1.114
  • From Bill Chatfield@bill_chatfield@yahoo.com to comp.sys.apple2 on Sat Dec 30 12:11:36 2023
    From Newsgroup: comp.sys.apple2

    On Fri, 29 Dec 2023 09:43:32 -0800
    fadden <fadden@fadden.com> wrote:

    FWIW, https://ciderpress2.com/doc-index.html was created to make this
    sort of question easier to answer.

    In this case, https://github.com/fadden/CiderPress2/blob/main/FileConv/Gfx/DoubleHiRes-notes.md
    has a list of authoritative references (//e tech note #3, file type
    note $08/0000), and summarizes the standard file layout:

    That is awesome! Thank you

    --- Synchronet 3.20a-Linux NewsLink 1.114