It has been a while since I had done any software development for C2NEmu but I thought to publish one missing utility that might be quite handy, albeit not for many: recording DMP files directly from a host computer where a saving process is running (e.g. the BASIC SAVE command or the Cyberload tape masterer is running).
For the time being only the Windows binary is available here.
The way it works is quite simple: users just run the utility on a PC pointing it to the virtual COM port C2NEmu is attached to and select an output filename.
D:\development\embedded\c2n_emulator\software\c2nemu-record\bin>c2nemu-record.exe COM9 helloworld.dmp C2NEmu record utility, rel 1.0 - (C) 2017 Luigi Di Fraia Communicates with a C2NEmu device to record tapes Reading from COM9 Issue SAVE on the host... OK Stop the recording chain with spacebar Filename intercepted: HELLO WORLD! Request to stop recording sent Finished! Total bytes saved: 85330
You might notice that the filename interceptor is available (for “CBM ROM Loader” and “Tutbotape 250″) and that multiple files can be saved to a single tape image in order to create a multiload tape or simply group together a few files. Once users are happy with the result, pressing space on the PC side stops the recording process.
Let’s have a look at TAPClean’s report for the file I saved above with SAVE”HELLO WORLD!” from BASIC:
TAPClean version: 0.35-pre8 GENERAL INFO AND TEST RESULTS TAP Name : D:\development\embedded\c2n_emulator\software\c2nemu-record\bin\helloworld.dmp TAP Size : 42506 bytes (41 kB) TAP Version : 1 Recognized : 100% Data Files : 4 Pauses : 3 Gaps : 0 Magic CRC32 : E594EE40 TAP Time : 0:22.78 Bootable : YES (1 part, name: HELLO WORLD!) Loader ID : n/a Overall Result : FAIL Header test : PASS [Sig: OK] [Ver: OK] [Siz: OK] Recognition test : PASS [42486 of 42486 bytes accounted for] [100%] Checksum test : PASS [4 of 4 checksummed files OK] Read test : PASS [0 Errors] Optimization test : FAIL [0 of 4 files OK] FILE FREQUENCY TABLE PAUSE (3) C64 ROM-TAPE HEADER (2) C64 ROM-TAPE DATA (2) FILE DATABASE --------------------------------- Seq. no.: 1 File Type: PAUSE Location: $0014 -> $0000 -> $0000 -> $0017 - Length : 5137160 cycles (5.2141 secs) --------------------------------- Seq. no.: 2 File Type: C64 ROM-TAPE HEADER Location: $0018 -> $6ACC -> $79CC -> $79E1 LA: $033C EA: $03FB SZ: 192 File Name: HELLO WORLD! Pilot/Trailer Size: 27136/0 Checkbyte Actual/Expected: $3F/$3F, PASS Read Errors: 0 Unoptimized Pulses: 29961 CRC32: A104AF98 - File ID : FIRST - DATA FILE type : BASIC - DATA FILE Load address : $0801 - DATA FILE End address : $081E - DATA FILE Size (calculated) : 29 bytes --------------------------------- Seq. no.: 3 File Type: C64 ROM-TAPE HEADER Location: $79E2 -> $7AE5 -> $89E5 -> $8A48 LA: $033C EA: $03FB SZ: 192 File Name: HELLO WORLD! Pilot/Trailer Size: 79/78 Checkbyte Actual/Expected: $3F/$3F, PASS Read Errors: 0 Unoptimized Pulses: 2986 CRC32: A104AF98 - File ID : REPEAT - DATA FILE type : BASIC - DATA FILE Load address : $0801 - DATA FILE End address : $081E - DATA FILE Size (calculated) : 29 bytes --------------------------------- Seq. no.: 4 File Type: PAUSE Location: $8A49 -> $0000 -> $0000 -> $8A4C - Length : 327688 cycles (0.3326 secs) --------------------------------- Seq. no.: 5 File Type: C64 ROM-TAPE DATA Location: $8A4D -> $A001 -> $A245 -> $A25A LA: $0801 EA: $081D SZ: 29 Pilot/Trailer Size: 5376/0 Checkbyte Actual/Expected: $2A/$2A, PASS Read Errors: 0 Unoptimized Pulses: 5916 CRC32: D1C5C788 - File ID : FIRST --------------------------------- Seq. no.: 6 File Type: C64 ROM-TAPE DATA Location: $A25B -> $A35E -> $A5A2 -> $A605 LA: $0801 EA: $081D SZ: 29 Pilot/Trailer Size: 79/78 Checkbyte Actual/Expected: $2A/$2A, PASS Read Errors: 0 Unoptimized Pulses: 686 CRC32: D1C5C788 - File ID : REPEAT --------------------------------- Seq. no.: 7 File Type: PAUSE Location: $A606 -> $0000 -> $0000 -> $A609 - Length : 322880 cycles (0.3277 secs) PULSE FREQUENCY TABLE 0x2B (49) 0x2C (3) 0x2D (2254) 0x2E (17459) 0x2F (17400) 0x30 (3) 0x3F (11) 0x40 (873) 0x41 (1185) 0x42 (2751) 0x55 (4) 0x56 (171) 0x57 (311)
And here’s the Data PRG decoded as BASIC program:
1 PRINT"HELLO WORLD!" 2 GOTO1
Not bad, is it? 🙂
