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- Path: f411.n201!not-for-mail
- Newsgroups: comp.sys.cbm
- X-Comment-To: Peter T Karlsson
- From: Pontus Berg <Pontus.Berg@p71.anet.canit.se>
- Date: Wed, 20 Mar 96 20:34:38 +0100
- Subject: Customizing JiffyDOS/128D?
- Message-ID: <827375678@p71.f411.n201.z2.ftn>
- References: <3572319220@tor.abc.se>
- Organization: BoArDgasm, Farsta, Sweden
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- X-FTN-MSGID: 2:201/411.71 3150c03e
- X-FTN-REPLY: tor.abc.se d4ed43f4
- X-FTN-CHRS: IBMPC 2
- X-FTN-Tearline: Spot 1.3a #676
- X-FTN-Origin: BoArDgasm, Farsta, Sweden (2:201/411.71)
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-
- In a message of 19 Mar 96 Peter T Karlsson wrote to All:
-
- >> the trouble is that I don't know the layout of the C128D EPROM chip (the
- >> one that contains the C64 KERNAL, BASIC and C128 KERNAL, BASIC (it's all
- >> in one chip)).
-
- TP>> As I recall, there are four sections to the EPROM for the 128D - 64
- TP>> mode stock, 64 mode jiffy, 128 mode stock, and 128 mode jiffy.
-
- PTK> The big problem is, that also the original ROM code is divided up,
- PTK> that would be to three parts, I guess, if it's not done in RAM:
-
- PTK> C64 mode Swedish
- PTK> C128 mode Swedish
- PTK> C128 mode English
-
- How big is the ROM in you machine? I have a 16K one for Basic+Kernal and then I
- guess some sort of ROM for the 128 part (16K as well I assume). This means you
- have to switch two different chips to switch the 64 as well as the 128 mode.
-
- PTK> I switch between Swedish and English mode (will change charset and
- PTK> keyboard layout in C128 mode, and only charset in C64 mode) by using
- PTK> the ASCII/CC key (relabeled "CAPS LOCK"). The CAPS LOCK key is
- PTK> hardwired to the charset ROM, which contains the Swedish and the
- PTK> English charset, but I think that the C128 mode transition between
- PTK> Swedish ROM (Swedish keyboard) and English ROM (English keyboard) is
- PTK> done in software (i.e not hardwired).
-
- Wait a minute here; Do you actually have different KEYMAPS for the two modes?
- I'll be damned - they are different in 128 mode! But the switching takes a bit
- to long to be only a flip of a switch if you ask me!
-
- PTK> I've done a dump of the original Swedish EPROM, and found it to be a
- PTK> 32KB EPROM (at least the auto-detect got it as a such), but I haven't
- PTK> checked the layout of it yet.
-
- Tron was with me a weekend and we coded a kernal patcher, that installed the
- swedish keys into their proper places so if you have the default dump of a
- kernal, you can easily make a swedish one out of it!
-
-
- )==========================================================(
- ) o/ Bacchus@FairLight.COM Fido: 2:201/411.71 (
- ) (# I'm a "geek tool" so ask about emulators elsewhere! (
- )=/7=======================================================(
-
- ... The C64 is my only religion!
- It's for real and can be proven and it's for sure divine!
- (Pontus Berg)
-