06756: nascom2, nascom1: Cassette records no signal

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06756	Interface	Major	Always	Nov 6, 2017, 20:05	Jul 4, 2019, 16:42

Tester	demotester	View Status	Public	Platform	MAME (Official Binary)
Assigned To	Robbbert	Resolution	Fixed	OS	Other
Status [?]	Resolved			Driver	nascom/nascom1.cpp
Version	0.191	Fixed in Version	0.212	Build	32-bit
		Fixed in Git Commit		Github Pull Request #

Summary	06756: nascom2, nascom1: Cassette records no signal
Description	According to the hw-manual (www.nascomhomepage.com/pdf/hardman.pdf) there are Links/switches LSW1 and LSW2. On the LSW2 there are: - LSW2/4 == Cassette receive speed 1200 or 300 baud - LSW2/1 == Cassette transmit speed 1200 or 300 baud In the same manual on the section "1.10 Cassette interface adjustment" it says: ------------------------------------------------------------------------------------------------------------------ The cassette interface is switchable to speeds of either 300 baud or 1200 baud. For speed of operation the 1200 baud rate is recommended... ------------------------------------------------------------------------------------------------------------------ In the current implementation there is not possible to choose between 1200 or 300 baud. Also, when trying to save in the .wav file get an empty file with no signal.
Steps To Reproduce	Start the emu with: mame nascom2 - in the internal menu on the file section create a new tape i.e. "test.wav" - in the internal menu tape control select to record - return to emu and type command: W 1000 1200 (enter) ... it will start to save! - after the saving finish, rewind the tape and press play - now type command: R (enter) ... it will start to load but it will load nothing! Checking the saved "test.wav" file with the i.e. Audacity shows that there are no any signal saved!
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	nascom2, nascom1

Attached Files

No.16597 Robbbert Moderator Jun 29, 2019, 11:09	Fixed cassette read/write for nascom1/2 at low speed per nascom1 schematic.
No.16623 Robbbert Moderator Jul 4, 2019, 16:41	Nascom2 uses Kansas City format. Added this, and a switch to choose 300 or 1200 baud.