The Sorbus Computer:
Apple Computer 1
The Sorbus Computer is capable of running like an Apple Computer 1, or Apple I for short.
The implementation can not be 100%, since the terminal is implemented
totally different. So the typical "startup screen" consisting of the
"_@"-combination repeated all over the screen is not reproduced. Neither is
the flashing "@" used as for the cursor.
Meta Keys
The Apple 1 keyboard only uses uppercase characters. So lowercase
characters are automatically converted. But still, a couple of keys are
still unused, those are used for meta functions:
- "`":
- reset
- "~":
- clear screen
- "{":
- disable original terminal output delay
- "}":
- enable original terminal output delay
- "|":
- (future expansion)
Examples For Using Apple Computer 1 Core
WozMon
WozMon knows four operations: read bytes, read ranges, write and execute.
The first line of a box is what is entered, the rest is the output by WozMon.
Dump a single byte of memory:
FF00
FF00: D8
Dump more that one byte at a time
FF00 FF03
FF00: D8
FF03: 7F
Dump a range of bytes of memory:
FF00.FF0F
FF00: D8 58 A0 7F 8C 12 D0 A9
FF08: A7 8D 11 D0 8D 13 D0 A9
Write to memory:
0: 53 56 4F 4C 4C 49
0000: 05
The output is from the dump command implied before the colon. Let's check
if our write to memory was successful:
0.5
0000: 53 56 4F 4C 4C 49
Without an address, data gets appended:
6:20
0006: 00
:21
0.7
0000: 20 56 4F 4C 4C 49 20 21
Execute a program in memory by appending to "R" the address
FF00 R
FF00: D8\
Pre-Installed Software
- 0280: detect type of CPU
- 02F0: print all characters in a loop
- E000: Integer BASIC
- E2B3: Integer BASIC (warm start)
- FF00: WozMon
Also loaded is the KRUSADER
ROM which contains more tools.
